McMaster-Carr logo
    Filter by
    System of Measurement
    Thread Direction
    Industrial Info Compare
    Fastener Strength Rating
    DFARS Specialty Metals
    Industrial Info Compare
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Number of Pieces
    Container Features
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    1,398 Products
    About Hex Nuts
    industrial info icon

    Choose a hex nut with the right profile, material, and strength for your application.

    Hex Nut Profile

    Hex Nut Profile

    Structural Heavy-Profile Hex Nuts

    Image of Product. Front orientation. Hex Nuts. Structural Heavy-Profile Hex Nuts.
    These nuts are designed to secure ASTM A325 screws in structural joints, such as mating I-beams, columns, and joists. About 10% wider and taller than standard-profile hex nuts, they handle heavier loads by distributing them over a larger area.
    High-Strength Steel
    Rated Grade 8, Grade C, or Class 10, these nuts are about 25% stronger than medium-strength steel nuts. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
    Black-Oxide Steel—Typically chosen for their appearance, these nuts have a dark, matte coating to create a finished look. They offer minimal corrosion resistance, so they're best for dry environments.
    Hot-Dipped Galvanized Steel—Combines the strength of steel with the rust resistance of stainless steel. These nuts are an economical alternative to 18-8 stainless steel in wet and outdoor environments, but they won't hold up to salt water and chemicals. The galvanized finish is thicker than other types of coatings, so the threads may be more likely to stick during installation. Use with other hot-dipped galvanized fasteners.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Black-Oxide Steel
    5/8"-11
    		1 1/16"39/64"ASTM Grade C
    		ASTM A563
    		10000000000000000
    3/4"-10
    		1 1/4"47/64"ASTM Grade C
    		ASTM A563
    		50000000000000
    7/8"-9
    		1 7/16"55/64"ASTM Grade C
    		ASTM A563
    		10000000000000
    1"-8
    		1 5/8"63/64"ASTM Grade C
    		ASTM A563
    		10000000000000
    1 1/8"-7
    		1 3/4"1 7/64"ASTM Grade C
    		ASTM A563
    		10000000000000
    1 1/4"-7
    		2"1 7/32"ASTM Grade C
    		ASTM A563
    		10000000000000
    1 1/2"-6
    		2 3/8"1 15/32"ASTM Grade C
    		ASTM A563
    		100000000000000
     
    Hot-Dipped Galvanized Steel
    1/2"-13
    		7/8"31/64"ASTM Grade C
    		ASTM A563
    		50000000000000
    5/8"-11
    		1 1/16"39/64"ASTM Grade C
    		ASTM A563
    		10000000000000
    3/4"-10
    		1 1/4"47/64"ASTM Grade C
    		ASTM A563
    		10000000000000
    7/8"-9
    		1 7/16"55/64"ASTM Grade C
    		ASTM A563
    		100000000000000
    1"-8
    		1 5/8"63/64"ASTM Grade C
    		ASTM A563
    		100000000000000
    1 1/8"-7
    		1 3/4"1 7/64"ASTM Grade C
    		ASTM A563
    		100000000000000
    1 1/4"-7
    		2"1 7/32"ASTM Grade C
    		ASTM A563
    		100000000000000
     
    Steel
    1/2"-13
    		7/8"31/64"ASTM Grade C
    		ASTM A563
    		2500000000000000
    5/8"-11
    		1 1/16"39/64"ASTM Grade C
    		ASTM A563
    		100000000000000
    3/4"-10
    		1 1/4"47/64"ASTM Grade C
    		ASTM A563
    		100000000000000
    7/8"-9
    		1 7/16"55/64"ASTM Grade C
    		ASTM A563
    		1000000000000000
    1"-8
    		1 5/8"63/64"ASTM Grade C
    		ASTM A563
    		500000000000000
    1 1/8"-7
    		1 3/4"1 7/64"ASTM Grade C
    		ASTM A563
    		10000000000000
    1 1/4"-7
    		2"1 7/32"ASTM Grade C
    		ASTM A563
    		10000000000000
    1 1/2"-6
    		2 3/8"1 15/32"ASTM Grade C
    		ASTM A563
    		100000000000000
     
    High-Strength Steel with Material Certificate
    Black-Oxide Steel—Typically chosen for their appearance, these nuts have a dark, matte coating to create a finished look. They offer minimal corrosion resistance, so they're best for dry environments.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Black-Oxide Steel
    1/2"-13
    		7/8"31/64"ASTM Grade C
    		ASTM A563
    		1000000000000000
     
    Extreme-Strength Steel
    Rated Grade DH, these nuts are about 20% stronger than high-strength steel nuts. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
    Hot-Dipped Galvanized Steel—Combines the strength of steel with the rust resistance of stainless steel. These nuts are an economical alternative to 18-8 stainless steel in wet and outdoor environments, but they won't hold up to salt water and chemicals. The galvanized finish is thicker than other types of coatings, so the threads may be more likely to stick during installation. Use with other hot-dipped galvanized fasteners.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Hot-Dipped Galvanized Steel
    1/2"-13
    		7/8"31/64"ASTM Grade DH
    		ASTM A563
    		25000000000000000
    5/8"-11
    		1 1/16"39/64"ASTM Grade DH
    		ASTM A563
    		1000000000000000
    3/4"-10
    		1 1/4"47/64"ASTM Grade DH
    		ASTM A563
    		1000000000000000
    7/8"-9
    		1 7/16"55/64"ASTM Grade DH
    		ASTM A563
    		1000000000000000
    1"-8
    		1 5/8"63/64"ASTM Grade DH
    		ASTM A563
    		500000000000000
    1 1/4"-7
    		2"1 7/32"ASTM Grade DH
    		ASTM A563
    		10000000000000
    1 1/2"-6
    		2 3/8"1 15/32"ASTM Grade DH
    		ASTM A563
    		100000000000000
     
    Steel
    1/2"-13
    		7/8"31/64"ASTM Grade DH
    		ASTM A563
    		2500000000000000
    5/8"-11
    		1 1/16"39/64"ASTM Grade DH
    		ASTM A563
    		1000000000000000
    3/4"-10
    		1 1/4"47/64"ASTM Grade DH
    		ASTM A563
    		1000000000000000
    7/8"-9
    		1 7/16"55/64"ASTM Grade DH
    		ASTM A563
    		500000000000000
    1"-8
    		1 5/8"63/64"ASTM Grade DH
    		ASTM A563
    		10000000000000
    1 1/8"-7
    		1 13/16"1 7/64"ASTM Grade DH
    		ASTM A563
    		10000000000000
    1 1/4"-7
    		2"1 7/32"ASTM Grade DH
    		ASTM A563
    		10000000000000
    1 1/2"-6
    		2 3/8"1 15/32"ASTM Grade DH
    		ASTM A563
    		100000000000000
     

    Hex Nuts

    The most commonly used hex nuts, these are suitable for fastening most machinery and equipment.
    Medium-Strength Steel
    Image of Product. Front orientation. Hex Nuts. Hex Nuts.
    These Grade 5 or Class 8 nuts are your go-to for fastening most machinery and equipment. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Steel
    1/4"-20
    		7/16"7/32"SAE Grade 5
    		ASME B18.2.210000000000000000
    1/4"-28
    		7/16"7/32"SAE Grade 5
    		ASME B18.2.21000000000000000
    5/16"-18
    		1/2"17/64"SAE Grade 5
    		ASME B18.2.21000000000000000
    5/16"-24
    		1/2"17/64"SAE Grade 5
    		ASME B18.2.21000000000000000
    3/8"-16
    		9/16"21/64"SAE Grade 5
    		ASME B18.2.21000000000000000
    3/8"-24
    		9/16"21/64"SAE Grade 5
    		ASME B18.2.21000000000000000
    7/16"-14
    		11/16"3/8"SAE Grade 5
    		ASME B18.2.210000000000000000
    7/16"-20
    		11/16"3/8"SAE Grade 5
    		ASME B18.2.210000000000000000
    1/2"-13
    		3/4"7/16"SAE Grade 5
    		ASME B18.2.25000000000000000
    1/2"-20
    		3/4"7/16"SAE Grade 5
    		ASME B18.2.25000000000000000
    9/16"-12
    		7/8"31/64"SAE Grade 5
    		ASME B18.2.22500000000000000
    9/16"-18
    		7/8"31/64"SAE Grade 5
    		ASME B18.2.2250000000000000
    5/8"-11
    		15/16"35/64"SAE Grade 5
    		ASME B18.2.22500000000000000
    5/8"-18
    		15/16"35/64"SAE Grade 5
    		ASME B18.2.22500000000000000
    3/4"-10
    		1 1/8"41/64"SAE Grade 5
    		ASME B18.2.22500000000000000
    3/4"-16
    		1 1/8"41/64"SAE Grade 5
    		ASME B18.2.22500000000000000
    7/8"-9
    		1 5/16"3/4"SAE Grade 5
    		ASME B18.2.21000000000000000
    7/8"-14
    		1 5/16"3/4"SAE Grade 5
    		ASME B18.2.21000000000000000
    1"-8
    		1 1/2"55/64"SAE Grade 5
    		ASME B18.2.250000000000000
    1"-12
    		1 1/2"55/64"SAE Grade 5
    		ASME B18.2.210000000000000
    1"-14
    		1 1/2"55/64"SAE Grade 5
    		ASME B18.2.250000000000000
    1 1/8"-7
    		1 11/16"31/32"SAE Grade 5
    		ASME B18.2.2500000000000000
    1 1/8"-12
    		1 11/16"31/32"SAE Grade 5
    		ASME B18.2.2500000000000000
    1 1/4"-7
    		1 7/8"1 1/16"SAE Grade 5
    		ASME B18.2.250000000000000
    1 1/4"-12
    		1 7/8"1 1/16"SAE Grade 5
    		ASME B18.2.2500000000000000
    1 3/8"-6
    		2 1/16"1 11/64"SAE Grade 5
    		ASME B18.2.210000000000000
    1 3/8"-12
    		2 1/16"1 11/64"SAE Grade 5
    		ASME B18.2.210000000000000
    1 1/2"-6
    		2 1/4"1 9/32"SAE Grade 5
    		ASME B18.2.210000000000000
    1 1/2"-12
    		2 1/4"1 9/32"SAE Grade 5
    		ASME B18.2.210000000000000
    1 3/4"-5
    		2 5/8"1 1/2"SAE Grade 5
    		ASME B18.2.2100000000000000
    1 3/4"-12
    		2 5/8"1 1/2"SAE Grade 5
    		ASME B18.2.2100000000000000
    2"-4 1/2
    		3"1 23/32"SAE Grade 5
    		ASME B18.2.2100000000000000
    2"-12
    		3"1 23/32"SAE Grade 5
    		ASME B18.2.2100000000000000
    M2 × 0.4 mm4 mm1.6 mmISO Class 8
    		DIN 9341000000000000000
    M2.5 × 0.45 mm5 mm2 mmISO Class 8
    		DIN 9341000000000000000
    M3 × 0.5 mm5.5 mm2.4 mmISO Class 8
    		DIN 9341000000000000000
    M3.5 × 0.6 mm6 mm2.8 mmISO Class 8
    		DIN 9341000000000000000
    M4 × 0.7 mm7 mm3.2 mmISO Class 8
    		DIN 9341000000000000000
    M5 × 0.8 mm8 mm4 mmISO Class 8
    		DIN 9341000000000000000
    M6 × 0.75 mm10 mm5 mmISO Class 8
    		DIN 93410000000000000000
    M6 × 1 mm10 mm5 mmISO Class 8
    		DIN 9341000000000000000
    M7 × 1 mm11 mm5.5 mmISO Class 8
    		DIN 9341000000000000000
    M8 × 1 mm13 mm6.5 mmISO Class 8
    		DIN 93410000000000000000
    M8 × 1.25 mm13 mm6.5 mmISO Class 8
    		DIN 9341000000000000000
    M10 × 1 mm17 mm8 mmISO Class 8
    		DIN 9345000000000000000
    M10 × 1.25 mm17 mm8 mmISO Class 8
    		DIN 9345000000000000000
    M10 × 1.5 mm17 mm8 mmISO Class 8
    		DIN 93410000000000000000
    M12 × 1 mm19 mm10 mmISO Class 8
    		DIN 9341000000000000000
    M12 × 1.25 mm19 mm10 mmISO Class 8
    		DIN 9342500000000000000
    M12 × 1.5 mm19 mm10 mmISO Class 8
    		DIN 9342500000000000000
    M12 × 1.75 mm19 mm10 mmISO Class 8
    		DIN 93410000000000000000
    M14 × 1.25 mm22 mm11 mmISO Class 8
    		DIN 934500000000000000
    M14 × 1.5 mm22 mm11 mmISO Class 8
    		DIN 9342500000000000000
    M14 × 2 mm22 mm11 mmISO Class 8
    		DIN 934250000000000000
    M16 × 1.5 mm24 mm13 mmISO Class 8
    		DIN 9342000000000000000
    M16 × 2 mm24 mm13 mmISO Class 8
    		DIN 9342500000000000000
    M18 × 1.5 mm27 mm15 mmISO Class 8
    		DIN 9341000000000000000
    M18 × 2.5 mm27 mm15 mmISO Class 8
    		DIN 9342500000000000000
    M20 × 1.5 mm30 mm16 mmISO Class 8
    		DIN 93450000000000000
    M20 × 2 mm30 mm16 mmISO Class 8
    		DIN 93410000000000000
    M20 × 2.5 mm30 mm16 mmISO Class 8
    		DIN 934100000000000000
    M22 × 1.5 mm32 mm18 mmISO Class 8
    		DIN 93410000000000000
    M22 × 2 mm32 mm18 mmISO Class 8
    		DIN 93410000000000000
    M22 × 2.5 mm32 mm18 mmISO Class 8
    		DIN 934100000000000000
    M24 × 1.5 mm36 mm19 mmISO Class 8
    		DIN 93410000000000000
    M24 × 2 mm36 mm19 mmISO Class 8
    		DIN 934500000000000000
    M24 × 3 mm36 mm19 mmISO Class 8
    		DIN 9341000000000000000
    M27 × 1.5 mm41 mm22 mmISO Class 8
    		DIN 934100000000000000
    M27 × 2 mm41 mm22 mmISO Class 8
    		DIN 93410000000000000
    M27 × 3 mm41 mm22 mmISO Class 8
    		DIN 93410000000000000
    M30 × 2 mm46 mm24 mmISO Class 8
    		DIN 93410000000000000
    M30 × 3.5 mm46 mm24 mmISO Class 8
    		DIN 934500000000000000
    M33 × 2 mm50 mm26 mmISO Class 8
    		DIN 934100000000000000
    M33 × 3 mm50 mm26 mmISO Class 8
    		DIN 93410000000000000
    M33 × 3.5 mm50 mm26 mmISO Class 8
    		DIN 93410000000000000
    M36 × 3 mm55 mm29 mmISO Class 8
    		DIN 93410000000000000
    M36 × 4 mm55 mm29 mmISO Class 8
    		DIN 93410000000000000
    M39 × 2 mm60 mm31 mmISO Class 8
    		DIN 934100000000000000
    M39 × 3 mm60 mm31 mmISO Class 8
    		DIN 934100000000000000
    M39 × 4 mm60 mm31 mmISO Class 8
    		DIN 93410000000000000
    M42 × 3 mm65 mm34 mmISO Class 8
    		DIN 934100000000000000
    M42 × 4.5 mm65 mm34 mmISO Class 8
    		DIN 93410000000000000
    M45 × 3 mm70 mm36 mmISO Class 8
    		DIN 934100000000000000
    M45 × 4.5 mm70 mm36 mmISO Class 8
    		DIN 934100000000000000
    M48 × 3 mm75 mm38 mmISO Class 8
    		DIN 934100000000000000
    M48 × 5 mm75 mm38 mmISO Class 8
    		DIN 934100000000000000
    M52 × 3 mm80 mm42 mmISO Class 8
    		DIN 934100000000000000
    M56 × 3 mm85 mm45 mmISO Class 8
    		DIN 934100000000000000
    M56 × 4 mm85 mm45 mmISO Class 8
    		DIN 934100000000000000
    M60 × 4 mm90 mm48 mmISO Class 8
    		DIN 934100000000000000
    M72 × 4 mm105 mm58 mmISO Class 8
    		DIN 9341000000000000000
     
    High-Strength Steel
    Image of Product. Front orientation. Hex Nuts. Hex Nuts.
    Rated Grade 8, Grade C, or Class 10, these nuts are about 25% stronger than medium-strength steel nuts. They are commonly used to fasten components in valves, pumps, motors, and other high-stress applications. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Steel
    1/4"-20
    		7/16"7/32"SAE Grade 8
    		—10000000000000000
    1/4"-28
    		7/16"7/32"SAE Grade 8
    		—1000000000000000
    5/16"-18
    		1/2"17/64"SAE Grade 8
    		—1000000000000000
    5/16"-24
    		1/2"17/64"SAE Grade 8
    		—1000000000000000
    3/8"-16
    		9/16"21/64"SAE Grade 8
    		—10000000000000000
    3/8"-24
    		9/16"21/64"SAE Grade 8
    		—10000000000000000
    7/16"-14
    		11/16"3/8"SAE Grade 8
    		—10000000000000000
    7/16"-20
    		11/16"3/8"SAE Grade 8
    		—10000000000000000
    1/2"-13
    		3/4"7/16"SAE Grade 8
    		—5000000000000000
    1/2"-20
    		3/4"7/16"SAE Grade 8
    		—500000000000000
    9/16"-12
    		7/8"31/64"SAE Grade 8
    		—5000000000000000
    9/16"-18
    		7/8"31/64"SAE Grade 8
    		—5000000000000000
    5/8"-11
    		15/16"35/64"SAE Grade 8
    		—5000000000000000
    5/8"-18
    		15/16"35/64"SAE Grade 8
    		—2500000000000000
    3/4"-10
    		1 1/8"41/64"SAE Grade 8
    		—2500000000000000
    3/4"-16
    		1 1/8"41/64"SAE Grade 8
    		—100000000000000
    7/8"-9
    		1 5/16"3/4"SAE Grade 8
    		—1000000000000000
    7/8"-14
    		1 5/16"3/4"SAE Grade 8
    		—1000000000000000
    1"-12
    		1 1/2"55/64"SAE Grade 8
    		—10000000000000
    1"-14
    		1 1/2"55/64"SAE Grade 8
    		—1000000000000000
    1 1/8"-7
    		1 11/16"31/32"SAE Grade 8
    		—500000000000000
    1 1/8"-12
    		1 11/16"31/32"SAE Grade 8
    		—500000000000000
    1 1/4"-7
    		1 7/8"1 1/16"SAE Grade 8
    		—500000000000000
    1 1/4"-12
    		1 7/8"1 1/16"SAE Grade 8
    		—500000000000000
    1 3/8"-6
    		2 1/16"1 11/64"SAE Grade 8
    		—10000000000000
    1 3/8"-12
    		2 1/16"1 11/64"SAE Grade 8
    		—10000000000000
    1 1/2"-6
    		2 1/4"1 9/32"SAE Grade 8
    		—10000000000000
    1 1/2"-12
    		2 1/4"1 9/32"SAE Grade 8
    		—10000000000000
    1 3/4"-5
    		2 5/8"1 1/2"SAE Grade 8
    		—100000000000000
    1 3/4"-12
    		2 5/8"1 1/2"SAE Grade 8
    		—100000000000000
    2"-4 1/2
    		3"1 23/32"SAE Grade 8
    		—100000000000000
    2"-12
    		3"1 23/32"SAE Grade 8
    		—100000000000000
    M3 × 0.5 mm5.5 mm2.4 mmISO Class 10
    		DIN 9342500000000000000
    M4 × 0.7 mm7 mm3.2 mmISO Class 10
    		DIN 9341000000000000000
    M5 × 0.8 mm8 mm4 mmISO Class 10
    		DIN 9341000000000000000
    M6 × 1 mm10 mm5 mmISO Class 10
    		DIN 93410000000000000000
    M8 × 1 mm13 mm6.5 mmISO Class 10
    		DIN 934500000000000000
    M8 × 1.25 mm13 mm6.5 mmISO Class 10
    		DIN 93410000000000000000
    M10 × 1 mm17 mm8 mmISO Class 10
    		DIN 93410000000000000
    M10 × 1.25 mm17 mm8 mmISO Class 10
    		DIN 93410000000000000
    M10 × 1.5 mm17 mm8 mmISO Class 10
    		DIN 9345000000000000000
    M12 × 1 mm19 mm10 mmISO Class 10
    		DIN 934100000000000000
    M12 × 1.25 mm19 mm10 mmISO Class 10
    		DIN 934250000000000000
    M12 × 1.5 mm19 mm10 mmISO Class 10
    		DIN 93410000000000000
    M12 × 1.75 mm19 mm10 mmISO Class 10
    		DIN 9342500000000000000
    M14 × 1.5 mm22 mm11 mmISO Class 10
    		DIN 93410000000000000
    M14 × 2 mm22 mm11 mmISO Class 10
    		DIN 9342500000000000000
    M16 × 1.5 mm24 mm13 mmISO Class 10
    		DIN 934100000000000000
    M16 × 2 mm24 mm13 mmISO Class 10
    		DIN 9341000000000000000
    M18 × 1.5 mm27 mm15 mmISO Class 10
    		DIN 9345000000000000
    M18 × 2.5 mm27 mm15 mmISO Class 10
    		DIN 9341000000000000000
    M20 × 1.5 mm30 mm16 mmISO Class 10
    		DIN 934500000000000
    M20 × 2 mm30 mm16 mmISO Class 10
    		DIN 93450000000000000
    M20 × 2.5 mm30 mm16 mmISO Class 10
    		DIN 9341000000000000000
    M22 × 1.5 mm32 mm18 mmISO Class 10
    		DIN 9341000000000000
    M22 × 2.5 mm32 mm18 mmISO Class 10
    		DIN 934500000000000000
    M24 × 1.5 mm36 mm19 mmISO Class 10
    		DIN 9341000000000000
    M24 × 2 mm36 mm19 mmISO Class 10
    		DIN 9341000000000000
    M24 × 3 mm36 mm19 mmISO Class 10
    		DIN 934500000000000000
    M27 × 2 mm41 mm22 mmISO Class 10
    		DIN 9341000000000000
    M27 × 3 mm41 mm22 mmISO Class 10
    		DIN 934500000000000000
    M30 × 1.5 mm46 mm24 mmISO Class 10
    		DIN 93410000000000000
    M30 × 2 mm49 mm24 mmISO Class 10
    		DIN 93410000000000000
    M30 × 3.5 mm46 mm24 mmISO Class 10
    		DIN 93410000000000000
    M36 × 2 mm55 mm29 mmISO Class 10
    		DIN 93410000000000000
    M36 × 4 mm55 mm29 mmISO Class 10
    		DIN 934100000000000000
    M42 × 4.5 mm65 mm34 mmISO Class 10
    		DIN 934100000000000000
    M48 × 5 mm75 mm38 mmISO Class 10
    		DIN 934100000000000000
     
    High-Strength Steel with Material Certificate
    Image of Product. Front orientation. Hex Nuts. Hex Nuts.
    Nuts include a report with a traceable lot number and a description of their chemical and physical properties. Rated Grade 8, Grade C, or Class 10, these nuts are about 25% stronger than medium-strength steel nuts. They are commonly used to fasten components in valves, pumps, motors, and other high-stress applications. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Pkg.
    Qty.
    Pkg.
    Steel
    1"-8
    		1 1/2"55/64"SAE Grade 8
    		10000000000000000
     
    Extreme-Strength Steel
    Image of Product. Front orientation. Hex Nuts. Hex Nuts.
    These nuts are about 20% stronger than high-strength steel nuts. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread Size
    Wd.,
    mm
    Ht.,
    mm
    Fastener Strength
    Grade/Class
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Steel
    M6 × 1 mm105ISO Class 12
    		DIN 93450000000000000000
    M8 × 1.25 mm136.5ISO Class 12
    		DIN 9342500000000000000
    M10 × 1.5 mm178ISO Class 12
    		DIN 934100000000000000
    M12 × 1.75 mm1910ISO Class 12
    		DIN 9341000000000000000
    M14 × 2 mm2211ISO Class 12
    		DIN 93410000000000000
    M16 × 2 mm2413ISO Class 12
    		DIN 934500000000000000
    M18 × 2.5 mm2715ISO Class 12
    		DIN 93410000000000000
    M20 × 2.5 mm3016ISO Class 12
    		DIN 934500000000000000
    M24 × 3 mm3619ISO Class 12
    		DIN 93410000000000000
    M27 × 3 mm4122ISO Class 12
    		DIN 934100000000000000
    M30 × 3.5 mm4624ISO Class 12
    		DIN 934100000000000000
    M33 × 3.5 mm5026ISO Class 12
    		DIN 934100000000000000
    M36 × 4 mm5529ISO Class 12
    		DIN 934100000000000000
    M39 × 4 mm6031ISO Class 12
    		DIN 934100000000000000
    M42 × 4.5 mm6534ISO Class 12
    		DIN 934100000000000000
    M45 × 4.5 mm7036ISO Class 12
    		DIN 934100000000000000
    M48 × 5 mm7538ISO Class 12
    		DIN 934100000000000000
     
    Low-Strength Steel
    Image of Product. Front orientation. Hex Nuts. Hex Nuts.
    Rated Grade 2, Class 6, or lower, these nuts are about half as strong as medium-strength nuts. They are suitable for light duty fastening applications, such as securing access panels. Use them with screws that have a similar strength rating to avoid stripping threads during installation.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Steel
    1/4"-20
    		7/16"7/32"SAE Grade 2
    		ASME B18.2.210000000000000000
    1/4"-28
    		7/16"7/32"SAE Grade 2
    		ASME B18.2.21000000000000000
    5/16"-18
    		1/2"17/64"SAE Grade 2
    		ASME B18.2.21000000000000000
    5/16"-24
    		1/2"17/64"SAE Grade 2
    		ASME B18.2.21000000000000000
    3/8"-16
    		9/16"21/64"SAE Grade 2
    		ASME B18.2.210000000000000000
    3/8"-24
    		9/16"21/64"SAE Grade 2
    		ASME B18.2.210000000000000000
    7/16"-14
    		11/16"3/8"SAE Grade 2
    		ASME B18.2.210000000000000000
    7/16"-20
    		11/16"3/8"SAE Grade 2
    		ASME B18.2.210000000000000000
    1/2"-13
    		3/4"7/16"SAE Grade 2
    		ASME B18.2.210000000000000000
    1/2"-20
    		3/4"7/16"SAE Grade 2
    		ASME B18.2.210000000000000000
    9/16"-12
    		7/8"31/64"SAE Grade 2
    		ASME B18.2.25000000000000000
    9/16"-18
    		7/8"31/64"SAE Grade 2
    		ASME B18.2.25000000000000000
    5/8"-11
    		15/16"35/64"SAE Grade 2
    		ASME B18.2.25000000000000000
    5/8"-18
    		15/16"35/64"SAE Grade 2
    		ASME B18.2.25000000000000000
    3/4"-10
    		1 1/8"41/64"SAE Grade 2
    		ASME B18.2.22500000000000000
    3/4"-16
    		1 1/8"41/64"SAE Grade 2
    		ASME B18.2.22500000000000000
    7/8"-9
    		1 5/16"3/4"SAE Grade 2
    		ASME B18.2.22500000000000000
    7/8"-14
    		1 5/16"3/4"SAE Grade 2
    		ASME B18.2.21000000000000000
    1"-8
    		1 1/2"55/64"SAE Grade 2
    		ASME B18.2.21000000000000000
    1"-12
    		1 1/2"55/64"SAE Grade 2
    		ASME B18.2.21000000000000000
    1"-14
    		1 1/2"55/64"SAE Grade 2
    		ASME B18.2.21000000000000000
    1 1/8"-7
    		1 11/16"31/32"SAE Grade 2
    		ASME B18.2.21000000000000000
    1 1/8"-12
    		1 11/16"31/32"SAE Grade 2
    		ASME B18.2.21000000000000000
    1 1/4"-7
    		1 7/8"1 1/16"SAE Grade 2
    		ASME B18.2.2500000000000000
    1 1/4"-12
    		1 7/8"1 1/16"SAE Grade 2
    		ASME B18.2.2500000000000000
    1 3/8"-6
    		2 1/16"1 11/64"SAE Grade 2
    		ASME B18.2.210000000000000
    1 3/8"-12
    		2 1/16"1 11/64"SAE Grade 2
    		ASME B18.2.210000000000000
    1 1/2"-6
    		2 1/4"1 9/32"SAE Grade 2
    		ASME B18.2.210000000000000
    1 1/2"-12
    		2 1/4"1 9/32"SAE Grade 2
    		ASME B18.2.210000000000000
    1 5/8"-5 1/2
    		2 7/16"1 25/64"SAE Grade 2
    		ASME B18.2.210000000000000
    1 5/8"-12
    		2 7/16"1 25/64"SAE Grade 2
    		ASME B18.2.210000000000000
    1 3/4"-5
    		2 5/8"1 1/2"SAE Grade 2
    		ASME B18.2.2100000000000000
    1 3/4"-12
    		2 5/8"1 1/2"SAE Grade 2
    		ASME B18.2.210000000000000
    1 7/8"-5
    		2 13/16"1 39/64"SAE Grade 2
    		ASME B18.2.2100000000000000
    1 7/8"-12
    		2 13/16"1 39/64"SAE Grade 2
    		ASME B18.2.2100000000000000
    2"-12
    		3"1 23/32"SAE Grade 2
    		ASME B18.2.2100000000000000
    2 1/4"-4 1/2
    		3 3/8"1 15/16"SAE Grade 2
    		ASME B18.2.2100000000000000
    2 1/4"-12
    		3 3/8"1 15/16"SAE Grade 2
    		ASME B18.2.2100000000000000
    2 1/2"-4
    		3 3/4"2 5/32"SAE Grade 2
    		ASME B18.2.2100000000000000
    2 1/2"-12
    		3 3/4"2 5/32"SAE Grade 2
    		ASME B18.2.2100000000000000
    2 3/4"-4
    		4 1/8"2 3/8"SAE Grade 2
    		ASME B18.2.2100000000000000
    3"-4
    		4 1/2"2 19/32"SAE Grade 2
    		ASME B18.2.2100000000000000
    3"-12
    		4 1/2"2 19/32"SAE Grade 2
    		ASME B18.2.21000000000000000
    3 1/2"-4
    		5 3/8"3 1/2"SAE Grade 2
    		ASME B18.2.21000000000000000
    M2 × 0.4 mm4 mm1.6 mm—DIN 9341000000000000000
    M2.5 × 0.45 mm5 mm2 mm—DIN 9341000000000000000
    M2.6 × 0.45 mm5 mm2 mm—DIN 9341000000000000000
    M3 × 0.5 mm5.5 mm2.4 mm—DIN 9341000000000000000
    M3.5 × 0.6 mm6 mm2.8 mm—DIN 9341000000000000000
    M4 × 0.7 mm7 mm3.2 mm—DIN 9341000000000000000
    M5 × 0.8 mm8 mm4 mm—DIN 9341000000000000000
    M8 × 1.25 mm13 mm6.5 mm—DIN 93410000000000000
    M10 × 1.5 mm17 mm8 mm—DIN 93410000000000000
    M12 × 1.75 mm19 mm10 mm—DIN 93410000000000000
    M16 × 2 mm24 mm13 mm—DIN 934100000000000000
    M20 × 2.5 mm30 mm16 mm—DIN 934100000000000000
     
    Corrosion-Resistant Stainless Steel
    Image of Product. Front orientation. Hex Nuts. Hex Nuts.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Highly-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these nuts won't degrade when exposed to harsh weather, salt water, and most chemicals.
    Thread Size
    Wd.
    Ht.
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    0000-160
    		1/16"1/32"—1000000000000000
    000-120
    		5/64"1/32"—500000000000000
    00-90
    		5/64"3/64"—500000000000000
    0-80
    		5/32"3/64"—1000000000000000
    1-64
    		5/32"3/64"—1000000000000000
    1-72
    		5/32"3/64"—1000000000000000
    2-56
    		3/16"1/16"—1000000000000000
    2-64
    		3/16"1/16"—1000000000000000
    3-48
    		3/16"1/16"—1000000000000000
    3-56
    		3/16"1/16"—1000000000000000
    4-40
    		1/4"3/32"—1000000000000000
    4-48
    		1/4"3/32"—1000000000000000
    5-40
    		5/16"7/64"—1000000000000000
    5-44
    		5/16"7/64"—1000000000000000
    6-32
    		5/16"7/64"—1000000000000000
    6-40
    		5/16"7/64"—1000000000000000
    8-32
    		11/32"1/8"—1000000000000000
    8-36
    		11/32"1/8"—10000000000000000
    10-24
    		3/8"1/8"—1000000000000000
    10-32
    		3/8"1/8"—1000000000000000
    12-24
    		7/16"5/32"—1000000000000000
    12-28
    		7/16"5/32"—10000000000000000
    1/4"-20
    		7/16"3/16"—1000000000000000
    1/4"-20
    		7/16"7/32"—1000000000000000
    1/4"-28
    		7/16"3/16"—10000000000000000
    1/4"-28
    		7/16"7/32"—1000000000000000
    1/4"-28
    		7/16"7/32"ASTM F594500000000000000
    1/4"-32
    		7/16"7/32"—10000000000000
    5/16"-18
    		1/2"17/64"—1000000000000000
    5/16"-18
    		9/16"7/32"—500000000000000
    5/16"-24
    		1/2"17/64"—1000000000000000
    5/16"-24
    		1/2"17/64"ASTM F594500000000000000
    5/16"-32
    		1/2"17/64"—10000000000000
    3/8"-16
    		9/16"21/64"—1000000000000000
    3/8"-16
    		9/16"21/64"ASTM F594250000000000000
    3/8"-16
    		5/8"1/4"—250000000000000
    3/8"-24
    		9/16"21/64"—500000000000000
    3/8"-24
    		9/16"21/64"ASTM F594250000000000000
    3/8"-32
    		9/16"21/64"—10000000000000
    7/16"-14
    		11/16"3/8"—500000000000000
    7/16"-14
    		11/16"3/8"ASTM F594100000000000000
    7/16"-20
    		11/16"3/8"—500000000000000
    7/16"-20
    		11/16"3/8"ASTM F594100000000000000
    1/2"-13
    		3/4"7/16"—250000000000000
    1/2"-13
    		3/4"7/16"ASTM F594100000000000000
    1/2"-20
    		3/4"7/16"—250000000000000
    1/2"-20
    		3/4"7/16"ASTM F594100000000000000
    1/2"-28
    		3/4"7/16"—100000000000000
    9/16"-12
    		7/8"31/64"—100000000000000
    9/16"-12
    		7/8"31/64"ASTM F594100000000000000
    9/16"-18
    		7/8"31/64"—100000000000000
    5/8"-11
    		15/16"35/64"—100000000000000
    5/8"-11
    		15/16"35/64"ASTM F59450000000000000
    5/8"-18
    		15/16"35/64"—100000000000000
    5/8"-18
    		15/16"35/64"ASTM F59450000000000000
    5/8"-24
    		15/16"35/64"—100000000000000
    3/4"-10
    		1 1/8"41/64"—100000000000000
    3/4"-16
    		1 1/8"41/64"—50000000000000
    3/4"-16
    		1 1/8"41/64"ASTM F59450000000000000
    3/4"-20
    		1 1/8"41/64"—100000000000000
    7/8"-9
    		1 5/16"3/4"—50000000000000
    7/8"-9
    		1 5/16"3/4"ASTM F59410000000000000
    7/8"-14
    		1 5/16"3/4"—50000000000000
    7/8"-14
    		1 5/16"3/4"ASTM F59410000000000000
    7/8"-20
    		1 5/16"3/4"—100000000000000
    1"-8
    		1 1/2"55/64"—50000000000000
    1"-8
    		1 1/2"55/64"ASTM F59410000000000000
    1"-12
    		1 1/2"55/64"—10000000000000
    1"-12
    		1 1/2"55/64"ASTM F59410000000000000
    1"-14
    		1 1/2"55/64"—10000000000000
    1"-14
    		1 1/2"55/64"ASTM F59410000000000000
    1 1/8"-7
    		1 11/16"31/32"—10000000000000
    1 1/8"-7
    		1 11/16"31/32"ASTM F59410000000000000
    1 1/8"-12
    		1 11/16"31/32"—10000000000000
    1 1/4"-7
    		1 7/8"1 1/16"—10000000000000
    1 1/4"-7
    		1 7/8"1 1/16"ASTM F59410000000000000
    1 1/4"-12
    		1 7/8"1 1/16"—10000000000000
    1 3/8"-6
    		2 1/16"1 11/64"—10000000000000
    1 1/2"-6
    		2 1/4"1 9/32"—10000000000000
    1 1/2"-6
    		2 1/4"1 9/32"ASTM F594100000000000000
    1 1/2"-12
    		2 1/4"1 9/32"—10000000000000
    1 3/4"-5
    		2 5/8"1 1/2"—100000000000000
    2"-4 1/2
    		3"1 23/32"—100000000000000
    M1 × 0.25 mm2.5 mm0.8 mmDIN 934500000000000000
    M1.2 × 0.25 mm3 mm1 mmDIN 93450000000000000
    M1.4 × 0.3 mm3 mm1.2 mmDIN 93410000000000000
    M1.6 × 0.35 mm3.2 mm1.3 mmDIN 9342500000000000000
    M2 × 0.4 mm4 mm1.6 mmDIN 9341000000000000000
    M2.5 × 0.45 mm5 mm2 mmDIN 9341000000000000000
    M3 × 0.5 mm5.5 mm2.4 mmDIN 9341000000000000000
    M3.5 × 0.6 mm6 mm2.8 mmDIN 9341000000000000000
    M4 × 0.7 mm7 mm3.2 mmDIN 9341000000000000000
    M5 × 0.8 mm8 mm4 mmDIN 9341000000000000000
    M6 × 1 mm10 mm5 mmDIN 93410000000000000000
    M7 × 1 mm11 mm5.5 mmDIN 934250000000000000
    M8 × 1 mm13 mm6.5 mmDIN 934100000000000000
    M8 × 1.25 mm13 mm6.5 mmDIN 9345000000000000000
    M10 × 1 mm17 mm8 mmDIN 9341000000000000000
    M10 × 1.25 mm17 mm8 mmDIN 934500000000000000
    M10 × 1.5 mm17 mm8 mmDIN 9342500000000000000
    M12 × 1 mm19 mm10 mmDIN 934500000000000000
    M12 × 1.25 mm19 mm10 mmDIN 934500000000000000
    M12 × 1.5 mm19 mm10 mmDIN 934500000000000000
    M12 × 1.75 mm19 mm10 mmDIN 9342500000000000000
    M14 × 1.5 mm22 mm11 mmDIN 93410000000000000
    M14 × 2 mm22 mm11 mmDIN 9341000000000000000
    M16 × 1.5 mm24 mm13 mmDIN 93410000000000000
    M16 × 2 mm24 mm13 mmDIN 9341000000000000000
    M18 × 1.5 mm27 mm15 mmDIN 93410000000000000
    M18 × 2.5 mm27 mm15 mmDIN 934500000000000000
    M20 × 1.5 mm30 mm16 mmDIN 93410000000000000
    M20 × 2 mm30 mm14.3 mmDIN 934100000000000000
    M20 × 2.5 mm30 mm16 mmDIN 934500000000000000
    M22 × 1.5 mm32 mm18 mmDIN 93410000000000000
    M22 × 2.5 mm32 mm18 mmDIN 93410000000000000
    M24 × 1.5 mm36 mm19 mmDIN 93410000000000000
    M24 × 2 mm36 mm19 mmDIN 934100000000000000
    M24 × 3 mm36 mm19 mmDIN 93410000000000000
    M27 × 2 mm41 mm20.7 mmDIN 934100000000000000
    M27 × 3 mm41 mm22 mmDIN 93410000000000000
    M30 × 1.5 mm46 mm24 mmDIN 934100000000000000
    M30 × 2 mm46 mm22.7 mmDIN 934100000000000000
    M30 × 3.5 mm46 mm24 mmDIN 934100000000000000
    M33 × 1.5 mm50 mm24.7 mmDIN 934100000000000000
    M33 × 3.5 mm50 mm24.7 mmDIN 934100000000000000
    M36 × 1.5 mm55 mm29 mmDIN 934100000000000000
    M36 × 3 mm55 mm27.4 mmDIN 934100000000000000
    M36 × 4 mm55 mm29 mmDIN 934100000000000000
    M42 × 4.5 mm65 mm34 mmDIN 934100000000000000
    M48 × 5 mm75 mm38 mmDIN 934100000000000000
     
    Highly-Corrosion-Resistant 316 Stainless Steel
    4-40
    		1/4"3/32"—1000000000000000
    6-32
    		5/16"7/64"—1000000000000000
    8-32
    		11/32"1/8"—1000000000000000
    10-24
    		3/8"1/8"—1000000000000000
    10-32
    		3/8"1/8"—1000000000000000
    12-24
    		7/16"5/32"—500000000000000
    1/4"-20
    		7/16"3/16"—250000000000000
    1/4"-20
    		7/16"7/32"—1000000000000000
    1/4"-20
    		7/16"7/32"ASTM F594500000000000000
    1/4"-28
    		7/16"7/32"—500000000000000
    1/4"-28
    		7/16"7/32"ASTM F594500000000000000
    5/16"-18
    		1/2"17/64"—500000000000000
    5/16"-18
    		1/2"17/64"ASTM F594250000000000000
    5/16"-24
    		1/2"17/64"—500000000000000
    5/16"-24
    		1/2"17/64"ASTM F594250000000000000
    3/8"-16
    		9/16"21/64"—500000000000000
    3/8"-16
    		9/16"21/64"ASTM F594250000000000000
    3/8"-16
    		5/8"1/4"—100000000000000
    3/8"-24
    		9/16"21/64"—250000000000000
    3/8"-24
    		9/16"21/64"ASTM F594250000000000000
    7/16"-14
    		11/16"3/8"—250000000000000
    7/16"-14
    		11/16"3/8"ASTM F594100000000000000
    7/16"-20
    		11/16"3/8"—100000000000000
    7/16"-20
    		11/16"3/8"ASTM F594100000000000000
    1/2"-13
    		3/4"7/16"—100000000000000
    1/2"-13
    		3/4"7/16"ASTM F59450000000000000
    1/2"-20
    		3/4"7/16"—100000000000000
    1/2"-20
    		3/4"7/16"ASTM F59450000000000000
    9/16"-12
    		7/8"31/64"—50000000000000
    9/16"-12
    		7/8"31/64"ASTM F59450000000000000
    9/16"-18
    		7/8"31/64"—50000000000000
    5/8"-11
    		15/16"35/64"—100000000000000
    5/8"-18
    		15/16"35/64"—50000000000000
    5/8"-18
    		15/16"35/64"ASTM F59450000000000000
    3/4"-10
    		1 1/8"41/64"—50000000000000
    3/4"-10
    		1 1/8"41/64"ASTM F59410000000000000
    3/4"-16
    		1 1/8"41/64"—50000000000000
    3/4"-16
    		1 1/8"41/64"ASTM F59410000000000000
    7/8"-9
    		1 5/16"3/4"—10000000000000
    7/8"-9
    		1 5/16"3/4"ASTM F59410000000000000
    7/8"-14
    		1 5/16"3/4"—10000000000000
    7/8"-14
    		1 5/16"3/4"ASTM F59410000000000000
    1"-8
    		1 1/2"55/64"—10000000000000
    1"-8
    		1 1/2"55/64"ASTM F59410000000000000
    1"-12
    		1 1/2"55/64"—10000000000000
    1"-12
    		1 1/2"55/64"ASTM F594100000000000000
    1"-14
    		1 1/2"55/64"—10000000000000
    1"-14
    		1 1/2"55/64"ASTM F59410000000000000
    1 1/8"-7
    		1 11/16"31/32"—10000000000000
    1 1/8"-7
    		1 11/16"31/32"ASTM F59410000000000000
    1 1/4"-7
    		1 7/8"1 1/16"—10000000000000
    1 1/4"-7
    		1 7/8"1 1/16"ASTM F594100000000000000
    1 1/2"-6
    		2 1/4"1 9/32"—10000000000000
    1 1/2"-6
    		2 1/4"1 9/32"ASTM F594100000000000000
    1 3/4"-5
    		2 5/8"1 1/2"—100000000000000
    2"-4 1/2
    		3"1 23/32"—100000000000000
    M1 × 0.25 mm2.5 mm0.8 mmDIN 93410000000000000
    M1.2 × 0.25 mm3 mm1 mmDIN 934500000000000000
    M1.4 × 0.3 mm3 mm1.2 mmDIN 934500000000000000
    M1.6 × 0.35 mm3.2 mm1.3 mmDIN 934100000000000000
    M2 × 0.4 mm4 mm1.6 mmDIN 934500000000000000
    M2.5 × 0.45 mm5 mm2 mmDIN 934500000000000000
    M3 × 0.5 mm5.5 mm2.4 mmDIN 934500000000000000
    M3.5 × 0.6 mm6 mm2.8 mmDIN 934500000000000000
    M4 × 0.7 mm7 mm3.2 mmDIN 934500000000000000
    M5 × 0.8 mm8 mm4 mmDIN 934500000000000000
    M6 × 1 mm10 mm5 mmDIN 9345000000000000000
    M7 × 1 mm11 mm5.5 mmDIN 9342500000000000000
    M8 × 1.25 mm13 mm6.5 mmDIN 9345000000000000000
    M10 × 1.5 mm17 mm8 mmDIN 9341000000000000000
    M12 × 1.75 mm19 mm10 mmDIN 93450000000000000
    M14 × 2 mm22 mm11 mmDIN 934500000000000000
    M16 × 2 mm24 mm13 mmDIN 934500000000000000
    M18 × 2.5 mm27 mm15 mmDIN 93410000000000000
    M20 × 2.5 mm30 mm16 mmDIN 93410000000000000
    M22 × 2.5 mm32 mm18 mmDIN 93410000000000000
    M24 × 3 mm36 mm19 mmDIN 93410000000000000
    M27 × 3 mm41 mm20.7 mmDIN 93410000000000000
    M30 × 3.5 mm46 mm24 mmDIN 934100000000000000
    M33 × 3.5 mm50 mm26 mmDIN 934100000000000000
    M36 × 4 mm55 mm29 mmDIN 934100000000000000
    M39 × 4 mm60 mm31 mmDIN 934100000000000000
    M42 × 4.5 mm65 mm34 mmDIN 934100000000000000
    M48 × 5 mm75 mm38 mmDIN 934100000000000000
     
    Corrosion-Resistant Stainless Steel with Material Certificate
    Image of Product. Front orientation. Hex Nuts. Hex Nuts.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Highly-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these nuts won't degrade when exposed to harsh weather, salt water, and most chemicals.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Thread
    Size
    Wd.
    Ht.
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    1/4"-20
    		7/16"7/32"ASTM F5945000000000000000
    5/16"-18
    		1/2"17/64"ASTM F594500000000000000
    7/16"-28
    		11/16"3/8"—10000000000000
    11/16"-24
    		1"27/64"—100000000000000
    3/4"-10
    		1 1/8"41/64"ASTM F59450000000000000
     
    Highly-Corrosion-Resistant 316 Stainless Steel
    5/8"-11
    		15/16"35/64"ASTM F59450000000000000
    1 3/8"-6
    		2 1/16"1 11/64"—10000000000000
     
    Low-Strength Steel with Material Certificate
    Image of Product. Front orientation. Hex Nuts. Hex Nuts.
    Rated Grade 2, Class 6, or lower, these nuts are about half as strong as medium-strength nuts. They are suitable for light duty fastening applications, such as securing access panels. Use them with screws that have a similar strength rating to avoid stripping threads during installation.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Thread Size
    Wd.,
    mm
    Ht.,
    mm
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Steel
    M14 × 2 mm2211DIN 934100000000000000
    M24 × 3 mm3619DIN 934100000000000000
    M30 × 3.5 mm4624DIN 934100000000000000
    M36 × 4 mm5529DIN 934100000000000000
    M42 × 4.5 mm6534DIN 934100000000000000
    M48 × 5 mm7538DIN 934100000000000000
     

    Thin-Profile Hex Nuts

    About half the height of standard-profile nuts, these fit in spaces with low clearance. You can also use them as jam nuts by threading them against another hex nut to hold it in place.
    Medium-Strength Steel
    Image of Product. Front orientation. Hex Nuts. Thin-Profile Hex Nuts.
    These Grade 5 or Class 04 nuts are your go-to for fastening most machinery and equipment. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Steel
    1/4"-20
    		7/16"5/32"SAE Grade 5
    		ASME B18.2.210000000000000000
    1/4"-28
    		7/16"5/32"SAE Grade 5
    		ASME B18.2.21000000000000000
    5/16"-18
    		1/2"3/16"SAE Grade 5
    		ASME B18.2.2500000000000000
    5/16"-24
    		1/2"3/16"SAE Grade 5
    		ASME B18.2.2500000000000000
    3/8"-16
    		9/16"7/32"SAE Grade 5
    		ASME B18.2.2500000000000000
    3/8"-24
    		9/16"7/32"SAE Grade 5
    		ASME B18.2.2500000000000000
    7/16"-14
    		11/16"1/4"SAE Grade 5
    		ASME B18.2.2500000000000000
    7/16"-20
    		11/16"1/4"SAE Grade 5
    		ASME B18.2.2500000000000000
    1/2"-13
    		3/4"5/16"SAE Grade 5
    		ASME B18.2.2250000000000000
    1/2"-20
    		3/4"5/16"SAE Grade 5
    		ASME B18.2.2250000000000000
    9/16"-12
    		7/8"5/16"SAE Grade 5
    		ASME B18.2.22500000000000000
    9/16"-18
    		7/8"5/16"SAE Grade 5
    		ASME B18.2.2250000000000000
    5/8"-11
    		15/16"3/8"SAE Grade 5
    		ASME B18.2.2100000000000000
    5/8"-18
    		15/16"3/8"SAE Grade 5
    		ASME B18.2.2100000000000000
    3/4"-10
    		1 1/8"27/64"SAE Grade 5
    		ASME B18.2.2100000000000000
    3/4"-16
    		1 1/8"27/64"SAE Grade 5
    		ASME B18.2.2100000000000000
    7/8"-9
    		1 5/16"31/64"SAE Grade 5
    		ASME B18.2.250000000000000
    7/8"-14
    		1 5/16"31/64"SAE Grade 5
    		ASME B18.2.250000000000000
    1"-8
    		1 1/2"35/64"SAE Grade 5
    		ASME B18.2.2500000000000000
    1"-12
    		1 1/2"35/64"SAE Grade 5
    		ASME B18.2.210000000000000
    1"-14
    		1 1/2"35/64"SAE Grade 5
    		ASME B18.2.210000000000000
    1 1/8"-7
    		1 11/16"39/64"SAE Grade 5
    		ASME B18.2.210000000000000
    1 1/8"-12
    		1 11/16"39/64"SAE Grade 5
    		ASME B18.2.210000000000000
    1 1/4"-7
    		1 7/8"23/32"SAE Grade 5
    		ASME B18.2.210000000000000
    1 1/4"-12
    		1 7/8"23/32"SAE Grade 5
    		ASME B18.2.210000000000000
    1 3/8"-12
    		2 1/16"25/32"SAE Grade 5
    		ASME B18.2.2100000000000000
    1 1/2"-12
    		2 1/4"27/32"SAE Grade 5
    		ASME B18.2.210000000000000
    M2 × 0.4 mm4 mm1.2 mm—DIN 439B, ISO 40351000000000000000
    M2.5 × 0.45 mm5 mm1.6 mm—DIN 439B, ISO 40351000000000000000
    M3 × 0.5 mm5.5 mm1.8 mm—DIN 439B, ISO 40351000000000000000
    M4 × 0.7 mm7 mm2.2 mmISO Class 04
    		DIN 439B, ISO 40351000000000000000
    M5 × 0.8 mm8 mm2.7 mmISO Class 04
    		DIN 439B, ISO 40351000000000000000
    M6 × 1 mm10 mm3.2 mmISO Class 04
    		DIN 439B, ISO 40351000000000000000
    M8 × 1 mm13 mm4 mmISO Class 04
    		DIN 439B, ISO 40355000000000000000
    M8 × 1 mm13 mm5 mm—DIN 936500000000000000
    M8 × 1.25 mm13 mm4 mmISO Class 04
    		DIN 439B, ISO 40351000000000000000
    M8 × 1.25 mm13 mm5 mm—DIN 9365000000000000000
    M10 × 1 mm17 mm6 mm—DIN 9362500000000000000
    M10 × 1.25 mm17 mm5 mmISO Class 04
    		DIN 439B, ISO 40355000000000000000
    M10 × 1.25 mm17 mm6 mm—DIN 9362500000000000000
    M10 × 1.5 mm17 mm5 mmISO Class 04
    		DIN 439B, ISO 403510000000000000000
    M10 × 1.5 mm17 mm6 mm—DIN 9362500000000000000
    M12 × 1.25 mm19 mm7 mm—DIN 9362500000000000000
    M12 × 1.5 mm19 mm6 mmISO Class 04
    		DIN 439B, ISO 40352500000000000000
    M12 × 1.5 mm19 mm7 mm—DIN 9362500000000000000
    M12 × 1.75 mm19 mm6 mmISO Class 04
    		DIN 439B, ISO 4035500000000000000
    M12 × 1.75 mm19 mm7 mm—DIN 9362500000000000000
    M14 × 1.5 mm22 mm7 mmISO Class 04
    		DIN 439B, ISO 40355000000000000000
    M14 × 1.5 mm22 mm8 mm—DIN 936100000000000000
    M14 × 2 mm22 mm7 mm—DIN 439B, ISO 4035100000000000000
    M14 × 2 mm22 mm8 mm—DIN 9362500000000000000
    M16 × 1.5 mm24 mm8 mm—DIN 936100000000000000
    M16 × 1.5 mm24 mm8 mmISO Class 04
    		DIN 439B, ISO 40352500000000000000
    M16 × 2 mm24 mm8 mm—DIN 936100000000000000
    M16 × 2 mm24 mm8 mmISO Class 04
    		DIN 439B, ISO 4035250000000000000
    M18 × 1.5 mm27 mm9 mm—DIN 936100000000000000
    M18 × 1.5 mm27 mm9 mmISO Class 04
    		DIN 439B, ISO 4035100000000000000
    M18 × 2.5 mm27 mm9 mm—DIN 9361000000000000000
    M20 × 1.5 mm30 mm9 mm—DIN 9361000000000000000
    M20 × 1.5 mm30 mm10 mmISO Class 04
    		DIN 439B, ISO 4035100000000000000
    M20 × 2 mm30 mm9 mm—DIN 9361000000000000000
    M20 × 2.5 mm30 mm9 mm—DIN 9361000000000000000
    M20 × 2.5 mm30 mm10 mmISO Class 04
    		DIN 439B, ISO 4035100000000000000
    M22 × 1.5 mm32 mm10 mm—DIN 9361000000000000000
    M22 × 1.5 mm32 mm11 mmISO Class 04
    		DIN 439B, ISO 4035100000000000000
    M22 × 2.5 mm32 mm10 mm—DIN 936500000000000000
    M22 × 2.5 mm32 mm11 mm—DIN 439B, ISO 403510000000000000
    M24 × 1.5 mm36 mm10 mm—DIN 93610000000000000
    M24 × 1.5 mm36 mm12 mmISO Class 04
    		DIN 439B, ISO 4035500000000000000
    M24 × 2 mm36 mm10 mm—DIN 93610000000000000
    M24 × 2 mm36 mm12 mmISO Class 04
    		DIN 439B, ISO 4035500000000000000
    M24 × 3 mm36 mm10 mm—DIN 93610000000000000
    M24 × 3 mm36 mm12 mmISO Class 04
    		DIN 439B, ISO 403550000000000000
    M27 × 1.5 mm41 mm12 mm—DIN 93610000000000000
    M27 × 1.5 mm41 mm13.5 mmISO Class 04
    		DIN 439B, ISO 4035100000000000000
    M27 × 2 mm41 mm12 mm—DIN 93610000000000000
    M27 × 2 mm41 mm13.5 mmISO Class 04
    		DIN 439B, ISO 403510000000000000
    M27 × 3 mm41 mm12 mm—DIN 93610000000000000
    M30 × 1.5 mm46 mm12 mm—DIN 93610000000000000
    M30 × 2 mm46 mm12 mm—DIN 93610000000000000
    M30 × 2 mm46 mm15 mmISO Class 04
    		DIN 439B, ISO 403510000000000000
    M30 × 3.5 mm46 mm12 mm—DIN 93610000000000000
    M30 × 3.5 mm46 mm15 mm—DIN 439B, ISO 403510000000000000
    M33 × 1.5 mm50 mm14 mm—DIN 936100000000000000
    M33 × 2 mm50 mm14 mm—DIN 93610000000000000
    M33 × 2 mm50 mm16.5 mmISO Class 04
    		DIN 439B, ISO 4035100000000000000
    M33 × 3.5 mm50 mm14 mm—DIN 936100000000000000
    M36 × 1.5 mm55 mm14 mm—DIN 936100000000000000
    M36 × 2 mm55 mm14 mm—DIN 936100000000000000
    M36 × 3 mm55 mm14 mm—DIN 936100000000000000
    M36 × 4 mm55 mm14 mm—DIN 936100000000000000
    M36 × 4 mm55 mm18 mmISO Class 04
    		DIN 439B, ISO 403510000000000000
    M39 × 3 mm60 mm19.5 mmISO Class 04
    		DIN 439B, ISO 4035100000000000000
    M42 × 1.5 mm65 mm16 mm—DIN 936100000000000000
    M42 × 3 mm65 mm16 mm—DIN 936100000000000000
    M42 × 3 mm65 mm21 mmISO Class 04
    		DIN 439B, ISO 4035100000000000000
    M42 × 4.5 mm65 mm16 mm—DIN 936100000000000000
    M45 × 3 mm70 mm22.5 mmISO Class 04
    		DIN 439B, ISO 4035100000000000000
    M48 × 1.5 mm75 mm18 mm—DIN 936100000000000000
    M48 × 3 mm75 mm18 mm—DIN 936100000000000000
    M48 × 3 mm75 mm24 mmISO Class 04
    		DIN 439B, ISO 4035100000000000000
    M48 × 5 mm75 mm18 mm—DIN 936100000000000000
    M48 × 5 mm75 mm24 mmISO Class 04
    		DIN 439B, ISO 4035100000000000000
    M52 × 3 mm80 mm26 mmISO Class 04
    		DIN 439B, ISO 4035100000000000000
    M52 × 5 mm80 mm26 mmISO Class 04
    		DIN 439B, ISO 4035100000000000000
     
    High-Strength Steel
    Image of Product. Front orientation. Hex Nuts. Thin-Profile Hex Nuts.
    Rated Grade 8, Grade C, or Class 10, these nuts are about 25% stronger than medium-strength steel nuts. They are commonly used to fasten components in valves, pumps, motors, and other high-stress applications. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Steel
    1/4"-20
    		7/16"5/32"SAE Grade 8
    		ASME B18.2.25000000000000000
    1/4"-28
    		7/16"5/32"SAE Grade 8
    		ASME B18.2.2500000000000000
    5/16"-18
    		1/2"3/16"SAE Grade 8
    		ASME B18.2.25000000000000000
    5/16"-24
    		1/2"3/16"SAE Grade 8
    		ASME B18.2.25000000000000000
    3/8"-16
    		9/16"7/32"SAE Grade 8
    		ASME B18.2.25000000000000000
    3/8"-24
    		9/16"7/32"SAE Grade 8
    		ASME B18.2.25000000000000000
    7/16"-14
    		11/16"1/4"SAE Grade 8
    		ASME B18.2.22500000000000000
    7/16"-20
    		11/16"1/4"SAE Grade 8
    		ASME B18.2.22500000000000000
    1/2"-13
    		3/4"5/16"SAE Grade 8
    		ASME B18.2.22500000000000000
    1/2"-20
    		3/4"5/16"SAE Grade 8
    		ASME B18.2.2100000000000000
    5/8"-11
    		15/16"3/8"SAE Grade 8
    		ASME B18.2.21000000000000000
    5/8"-18
    		15/16"3/8"SAE Grade 8
    		ASME B18.2.21000000000000000
    3/4"-10
    		1 1/8"27/64"SAE Grade 8
    		ASME B18.2.21000000000000000
    3/4"-16
    		1 1/8"27/64"SAE Grade 8
    		ASME B18.2.21000000000000000
    7/8"-9
    		1 5/16"31/64"SAE Grade 8
    		ASME B18.2.2500000000000000
    7/8"-14
    		1 5/16"31/64"SAE Grade 8
    		ASME B18.2.2500000000000000
    1"-8
    		1 1/2"35/64"SAE Grade 8
    		ASME B18.2.210000000000000
    1"-12
    		1 1/2"35/64"SAE Grade 8
    		ASME B18.2.210000000000000
    1"-14
    		1 1/2"35/64"SAE Grade 8
    		ASME B18.2.210000000000000
    1 1/8"-7
    		1 11/16"39/64"SAE Grade 8
    		ASME B18.2.210000000000000
    1 1/4"-12
    		1 7/8"23/32"SAE Grade 8
    		ASME B18.2.2100000000000000
    1 3/8"-6
    		2 1/16"25/32"SAE Grade 8
    		ASME B18.2.2100000000000000
    1 3/8"-12
    		2 1/16"25/32"SAE Grade 8
    		ASME B18.2.2100000000000000
    1 1/2"-6
    		2 1/4"27/32"SAE Grade 8
    		ASME B18.2.2100000000000000
    1 1/2"-12
    		2 1/4"27/32"SAE Grade 8
    		ASME B18.2.2100000000000000
    1 3/4"-5
    		2 5/8"31/32"SAE Grade 8
    		ASME B18.2.2100000000000000
    1 3/4"-12
    		2 5/8"31/32"SAE Grade 8
    		ASME B18.2.2100000000000000
    2"-4 1/2
    		3"1 3/32"SAE Grade 8
    		ASME B18.2.2100000000000000
    2"-12
    		3"1 3/32"SAE Grade 8
    		ASME B18.2.2100000000000000
     
    Low-Strength Steel
    Image of Product. Front orientation. Hex Nuts. Thin-Profile Hex Nuts.
    Rated Grade 2, Class 6, or lower, these nuts are about half as strong as medium-strength nuts. They are suitable for light duty fastening applications, such as securing access panels. Use them with screws that have a similar strength rating to avoid stripping threads during installation.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Pkg.
    Qty.
    Pkg.
    Steel
    1/4"-20
    		7/16"5/32"SAE Grade 2
    		10000000000000000
    1/4"-28
    		7/16"5/32"SAE Grade 2
    		1000000000000000
    5/16"-18
    		1/2"3/16"SAE Grade 2
    		1000000000000000
    5/16"-24
    		1/2"3/16"SAE Grade 2
    		1000000000000000
    3/8"-16
    		9/16"7/32"SAE Grade 2
    		1000000000000000
    3/8"-24
    		9/16"7/32"SAE Grade 2
    		1000000000000000
    7/16"-14
    		11/16"1/4"SAE Grade 2
    		1000000000000000
    7/16"-20
    		11/16"1/4"SAE Grade 2
    		1000000000000000
    1/2"-13
    		3/4"5/16"SAE Grade 2
    		10000000000000000
    1/2"-20
    		3/4"5/16"SAE Grade 2
    		10000000000000000
    9/16"-18
    		7/8"5/16"SAE Grade 2
    		10000000000000000
    5/8"-11
    		15/16"3/8"SAE Grade 2
    		10000000000000000
    5/8"-18
    		15/16"3/8"SAE Grade 2
    		10000000000000000
    3/4"-10
    		1 1/8"27/64"SAE Grade 2
    		5000000000000000
    3/4"-16
    		1 1/8"27/64"SAE Grade 2
    		5000000000000000
    7/8"-9
    		1 5/16"31/64"SAE Grade 2
    		2500000000000000
    7/8"-14
    		1 5/16"31/64"SAE Grade 2
    		2500000000000000
    1"-8
    		1 1/2"35/64"SAE Grade 2
    		2000000000000000
    1"-14
    		1 1/2"35/64"SAE Grade 2
    		1000000000000000
    1 1/8"-7
    		1 11/16"39/64"SAE Grade 2
    		1000000000000000
    1 1/8"-12
    		1 11/16"39/64"SAE Grade 2
    		1000000000000000
    1 1/4"-7
    		1 7/8"23/32"SAE Grade 2
    		500000000000000
    1 1/4"-12
    		1 7/8"23/32"SAE Grade 2
    		500000000000000
    1 3/8"-12
    		2 1/16"25/32"SAE Grade 2
    		500000000000000
    1 1/2"-6
    		2 1/4"27/32"SAE Grade 2
    		10000000000000
    1 1/2"-12
    		2 1/4"27/32"SAE Grade 2
    		10000000000000
    1 5/8"-12
    		2 7/16"29/32"SAE Grade 2
    		10000000000000
    1 3/4"-5
    		2 5/8"31/32"SAE Grade 2
    		10000000000000
    1 3/4"-12
    		2 5/8"31/32"SAE Grade 2
    		10000000000000
    1 7/8"-12
    		2 13/16"1 1/32"SAE Grade 2
    		10000000000000
    2"-4 1/2
    		3"1 3/32"SAE Grade 2
    		100000000000000
    2"-12
    		3"1 3/32"SAE Grade 2
    		100000000000000
    2 1/4"-12
    		3 3/8"1 7/32"SAE Grade 2
    		100000000000000
    2 1/2"-4
    		3 3/4"1 13/32"SAE Grade 2
    		100000000000000
    2 1/2"-12
    		3 3/4"1 13/32"SAE Grade 2
    		100000000000000
    3"-12
    		4 1/2"1 21/32"SAE Grade 2
    		100000000000000
     
    Corrosion-Resistant Stainless Steel
    Image of Product. Front orientation. Hex Nuts. Thin-Profile Hex Nuts.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Highly-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these nuts won't degrade when exposed to harsh weather, salt water, and most chemicals.
    Thread Size
    Wd.
    Ht.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    1/4"-20
    		7/16"5/32"—10000000000000000
    1/4"-28
    		7/16"5/32"—1000000000000000
    5/16"-18
    		1/2"3/16"—1000000000000000
    5/16"-24
    		1/2"3/16"—1000000000000000
    3/8"-16
    		9/16"7/32"—1000000000000000
    3/8"-24
    		9/16"7/32"—10000000000000000
    7/16"-14
    		11/16"1/4"—5000000000000000
    7/16"-20
    		11/16"1/4"—5000000000000000
    1/2"-13
    		3/4"5/16"—250000000000000
    1/2"-20
    		3/4"5/16"—250000000000000
    1/2"-28
    		3/4"5/16"—100000000000000
    9/16"-12
    		7/8"5/16"—2000000000000000
    9/16"-18
    		7/8"5/16"—100000000000000
    5/8"-11
    		15/16"3/8"—100000000000000
    5/8"-18
    		15/16"3/8"—100000000000000
    5/8"-24
    		15/16"3/8"—100000000000000
    3/4"-10
    		1 1/8"27/64"—100000000000000
    3/4"-16
    		1 1/8"27/64"—100000000000000
    3/4"-20
    		1 1/8"27/64"—100000000000000
    7/8"-9
    		1 5/16"31/64"—50000000000000
    7/8"-14
    		1 5/16"31/64"—50000000000000
    1"-8
    		1 1/2"35/64"—10000000000000
    1"-12
    		1 1/2"35/64"—10000000000000
    1"-14
    		1 1/2"35/64"—10000000000000
    1 1/8"-7
    		1 11/16"39/64"—10000000000000
    1 1/8"-12
    		1 11/16"39/64"—10000000000000
    1 1/4"-7
    		1 7/8"23/32"—10000000000000
    1 1/4"-12
    		1 7/8"23/32"—10000000000000
    1 1/2"-6
    		2 1/4"27/32"—10000000000000
    1 1/2"-12
    		2 1/4"27/32"—10000000000000
    1 3/4"-5
    		2 5/8"31/32"—100000000000000
    2"-4 1/2
    		3"1 3/32"—100000000000000
    M1.6 × 0.35 mm3.2 mm1 mmDIN 439B, ISO 403510000000000000
    M2 × 0.4 mm4 mm1.2 mmDIN 439B, ISO 4035500000000000000
    M2.5 × 0.45 mm5 mm1.6 mmDIN 439B, ISO 4035500000000000000
    M3 × 0.5 mm5.5 mm1.8 mmDIN 439B, ISO 403510000000000000000
    M4 × 0.7 mm7 mm2.2 mmDIN 439B, ISO 40351000000000000000
    M5 × 0.8 mm8 mm2.7 mmDIN 439B, ISO 40351000000000000000
    M6 × 1 mm10 mm3.2 mmDIN 439B, ISO 40351000000000000000
    M8 × 1 mm13 mm4 mmDIN 439B, ISO 4035250000000000000
    M8 × 1 mm13 mm5 mmDIN 9362500000000000000
    M8 × 1.25 mm13 mm4 mmDIN 439B, ISO 40355000000000000000
    M10 × 1 mm17 mm5 mmDIN 439B, ISO 4035100000000000000
    M10 × 1 mm17 mm6 mmDIN 9361000000000000000
    M10 × 1.25 mm17 mm5 mmDIN 439B, ISO 4035100000000000000
    M10 × 1.5 mm17 mm5 mmDIN 439B, ISO 4035250000000000000
    M10 × 1.5 mm17 mm6 mmDIN 9362500000000000000
    M12 × 1 mm19 mm6 mmDIN 439B, ISO 40351000000000000000
    M12 × 1.25 mm19 mm6 mmDIN 439B, ISO 4035100000000000000
    M12 × 1.5 mm19 mm6 mmDIN 439B, ISO 4035100000000000000
    M12 × 1.5 mm19 mm7 mmDIN 93650000000000000
    M12 × 1.75 mm19 mm6 mmDIN 439B, ISO 4035200000000000000
    M12 × 1.75 mm19 mm7 mmDIN 9361000000000000000
    M14 × 1.5 mm22 mm7 mmDIN 439B, ISO 403550000000000000
    M14 × 1.5 mm22 mm8 mmDIN 93610000000000000
    M14 × 2 mm22 mm7 mmDIN 439B, ISO 403550000000000000
    M14 × 2 mm22 mm8 mmDIN 93650000000000000
    M16 × 1.5 mm24 mm8 mmDIN 439B, ISO 4035500000000000000
    M16 × 1.5 mm24 mm8 mmDIN 936500000000000000
    M16 × 2 mm24 mm8 mmDIN 439B, ISO 403550000000000000
    M16 × 2 mm24 mm8 mmDIN 936500000000000000
    M18 × 1.5 mm27 mm9 mmDIN 439B, ISO 403510000000000000
    M18 × 1.5 mm27 mm9 mmDIN 93610000000000000
    M18 × 2.5 mm27 mm9 mmDIN 439B, ISO 4035500000000000000
    M18 × 2.5 mm27 mm9 mmDIN 936500000000000000
    M20 × 1.5 mm30 mm9 mmDIN 93610000000000000
    M20 × 1.5 mm30 mm10 mmDIN 439B, ISO 403510000000000000
    M20 × 2 mm30 mm10 mmDIN 439B, ISO 4035500000000000000
    M20 × 2.5 mm30 mm9 mmDIN 93610000000000000
    M20 × 2.5 mm30 mm10 mmDIN 439B, ISO 4035500000000000000
    M22 × 1.5 mm32 mm10 mmDIN 93610000000000000
    M22 × 1.5 mm32 mm11 mmDIN 439B, ISO 4035100000000000000
    M22 × 2.5 mm32 mm11 mmDIN 439B, ISO 4035100000000000000
    M24 × 1.5 mm36 mm10 mmDIN 936100000000000000
    M24 × 1.5 mm36 mm12 mmDIN 439B, ISO 403510000000000000
    M24 × 2 mm36 mm12 mmDIN 439B, ISO 4035100000000000000
    M24 × 3 mm36 mm10 mmDIN 93610000000000000
    M24 × 3 mm36 mm12 mmDIN 439B, ISO 403510000000000000
    M27 × 1.5 mm41 mm12 mmDIN 936100000000000000
    M27 × 3 mm41 mm12 mmDIN 936100000000000000
    M30 × 1.5 mm46 mm12 mmDIN 936100000000000000
    M30 × 1.5 mm46 mm15 mmDIN 439B, ISO 4035100000000000000
    M30 × 2 mm46 mm15 mmDIN 439B, ISO 4035100000000000000
    M30 × 3.5 mm46 mm12 mmDIN 936100000000000000
    M30 × 3.5 mm46 mm15 mmDIN 439B, ISO 4035100000000000000
    M33 × 3.5 mm50 mm14 mmDIN 936100000000000000
    M36 × 1.5 mm55 mm14 mmDIN 936100000000000000
    M36 × 1.5 mm55 mm18 mmDIN 439B, ISO 4035100000000000000
    M36 × 4 mm55 mm14 mmDIN 936100000000000000
    M36 × 4 mm55 mm18 mmDIN 439B, ISO 4035100000000000000
    M42 × 4.5 mm65 mm16 mmDIN 936100000000000000
     
    Highly-Corrosion-Resistant 316 Stainless Steel
    1/4"-20
    		7/16"5/32"—500000000000000
    1/4"-28
    		7/16"5/32"—500000000000000
    5/16"-18
    		1/2"3/16"—250000000000000
    5/16"-24
    		1/2"3/16"—250000000000000
    3/8"-16
    		9/16"7/32"—250000000000000
    3/8"-24
    		9/16"7/32"—250000000000000
    7/16"-14
    		11/16"1/4"—100000000000000
    7/16"-20
    		11/16"1/4"—100000000000000
    1/2"-13
    		3/4"5/16"—100000000000000
    1/2"-20
    		3/4"5/16"—100000000000000
    9/16"-12
    		7/8"5/16"—50000000000000
    9/16"-18
    		7/8"5/16"—10000000000000
    5/8"-11
    		15/16"3/8"—50000000000000
    5/8"-18
    		15/16"3/8"—50000000000000
    3/4"-10
    		1 1/8"27/64"—10000000000000
    3/4"-16
    		1 1/8"27/64"—10000000000000
    7/8"-9
    		1 5/16"31/64"—10000000000000
    7/8"-14
    		1 5/16"31/64"—10000000000000
    1"-8
    		1 1/2"35/64"—10000000000000
    1"-12
    		1 1/2"35/64"—10000000000000
    1"-14
    		1 1/2"35/64"—10000000000000
    1 1/8"-7
    		1 11/16"39/64"—100000000000000
    1 1/8"-12
    		1 11/16"39/64"—100000000000000
    1 1/4"-7
    		1 7/8"23/32"—10000000000000
    1 1/4"-12
    		1 7/8"23/32"—100000000000000
    1 1/2"-6
    		2 1/4"27/32"—100000000000000
    1 1/2"-12
    		2 1/4"27/32"—100000000000000
    1 3/4"-5
    		2 5/8"31/32"—100000000000000
    2"-4 1/2
    		3"1 3/32"—100000000000000
    M2 × 0.4 mm4 mm1.2 mmDIN 439B, ISO 4035250000000000000
    M2.5 × 0.45 mm5 mm1.6 mmDIN 439B, ISO 4035500000000000000
    M3 × 0.5 mm5.5 mm1.8 mmDIN 439B, ISO 403510000000000000000
    M4 × 0.7 mm7 mm2.2 mmDIN 439B, ISO 4035500000000000000
    M5 × 0.8 mm8 mm2.7 mmDIN 439B, ISO 4035500000000000000
    M6 × 1 mm10 mm3.2 mmDIN 439B, ISO 4035500000000000000
    M8 × 0.75 mm13 mm4 mmDIN 439B, ISO 4035100000000000000
    M8 × 1 mm13 mm4 mmDIN 439B, ISO 4035100000000000000
    M8 × 1.25 mm13 mm4 mmDIN 439B, ISO 40355000000000000000
    M8 × 1.25 mm13 mm5 mmDIN 936100000000000000
    M10 × 1.25 mm17 mm5 mmDIN 439B, ISO 403550000000000000
    M10 × 1.5 mm17 mm5 mmDIN 439B, ISO 40352000000000000000
    M10 × 1.5 mm17 mm6 mmDIN 9361000000000000000
    M12 × 1.25 mm19 mm6 mmDIN 439B, ISO 403510000000000000
    M12 × 1.5 mm19 mm6 mmDIN 439B, ISO 403510000000000000
    M12 × 1.75 mm19 mm6 mmDIN 439B, ISO 4035100000000000000
    M12 × 1.75 mm19 mm7 mmDIN 93650000000000000
    M14 × 1.5 mm22 mm7 mmDIN 439B, ISO 403510000000000000
    M14 × 2 mm22 mm7 mmDIN 439B, ISO 403550000000000000
    M14 × 2 mm22 mm8 mmDIN 93610000000000000
    M16 × 1.5 mm24 mm8 mmDIN 439B, ISO 403510000000000000
    M16 × 2 mm24 mm8 mmDIN 93610000000000000
    M18 × 1.5 mm27 mm9 mmDIN 439B, ISO 403510000000000000
    M18 × 2.5 mm27 mm9 mmDIN 93610000000000000
    M20 × 2 mm30 mm10 mmDIN 439B, ISO 403510000000000000
    M20 × 2.5 mm30 mm9 mmDIN 93610000000000000
    M20 × 2.5 mm30 mm10 mmDIN 439B, ISO 403510000000000000
    M22 × 2.5 mm32 mm10 mmDIN 936100000000000000
    M24 × 3 mm36 mm10 mmDIN 93610000000000000
    M24 × 3 mm36 mm12 mmDIN 439B, ISO 403510000000000000
    M27 × 2 mm41 mm13.5 mmDIN 439B, ISO 4035100000000000000
    M27 × 3 mm41 mm12 mmDIN 936100000000000000
    M30 × 2 mm46 mm15 mmDIN 439B, ISO 4035100000000000000
    M30 × 3.5 mm46 mm12 mmDIN 936100000000000000
    M30 × 3.5 mm46 mm15 mmDIN 439B, ISO 4035100000000000000
    M33 × 2 mm50 mm16.5 mmDIN 439B, ISO 4035100000000000000
    M36 × 1.5 mm55 mm18 mmDIN 439B, ISO 4035100000000000000
    M36 × 4 mm55 mm18 mmDIN 439B, ISO 4035100000000000000
     
    Corrosion-Resistant Stainless Steel with Material Certificate
    Image of Product. Front orientation. Hex Nuts. Thin-Profile Hex Nuts.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Highly-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these nuts won't degrade when exposed to harsh weather, salt water, and most chemicals.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Thread
    Size
    Wd.
    Ht.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    7/8"-20
    		1 5/16"31/64"—1000000000000000
     
    Highly-Corrosion-Resistant 316 Stainless Steel
    M16 × 2 mm24 mm8 mmDIN 439B, ISO 403550000000000000
     
    Medium-Strength Steel with Material Certificate
    Image of Product. Front orientation. Hex Nuts. Thin-Profile Hex Nuts.
    These Grade 5 or Class 04 nuts are your go-to for fastening most machinery and equipment. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Thread
    Size
    Wd.,
    mm
    Ht.,
    mm
    Fastener Strength
    Grade/Class
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Steel
    M36 × 3 mm5518ISO Class 04
    		DIN 439B, ISO 40351000000000000000
     

    Left-Hand-Thread Thin-Profile Hex Nuts

    Image of Product. Front orientation. Contains Annotated, MultipleImages. Hex Nuts. Left-Hand-Thread Thin-Profile Hex Nuts.
    These nuts tighten when turned to the left. Use them with left-hand rods and screws to prevent counterclockwise-moving parts from loosening. About half the height of standard-profile nuts, these fit in spaces with low clearance. You can also use them as jam nuts by threading them against another hex nut to hold it in place.
    Low-Strength Steel
    Rated Grade 2, Class 6, or lower, these nuts are about half as strong as medium-strength nuts. They are suitable for light duty fastening applications, such as securing access panels. Use them with screws that have a similar strength rating to avoid stripping threads during installation.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Pkg.
    Qty.
    Pkg.
    Steel
    1/4"-20
    		7/16"5/32"SAE Grade 2
    		5000000000000000
    1/4"-28
    		7/16"5/32"SAE Grade 2
    		10000000000000000
    5/16"-18
    		1/2"3/16"SAE Grade 2
    		500000000000000
    5/16"-24
    		1/2"3/16"SAE Grade 2
    		10000000000000000
    3/8"-16
    		9/16"7/32"SAE Grade 2
    		250000000000000
    3/8"-24
    		9/16"7/32"SAE Grade 2
    		5000000000000000
    1/2"-13
    		3/4"5/16"SAE Grade 2
    		2500000000000000
    1/2"-20
    		3/4"5/16"SAE Grade 2
    		2500000000000000
    5/8"-11
    		15/16"3/8"SAE Grade 2
    		1000000000000000
    5/8"-18
    		15/16"3/8"SAE Grade 2
    		1000000000000000
    3/4"-10
    		1 1/8"27/64"SAE Grade 2
    		1000000000000000
    3/4"-16
    		1 1/8"27/64"SAE Grade 2
    		1000000000000000
    1"-8
    		1 1/2"35/64"SAE Grade 2
    		500000000000000
    1"-14
    		1 1/2"35/64"SAE Grade 2
    		500000000000000
     
    Corrosion-Resistant Stainless Steel
    18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Highly-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these nuts won't degrade when exposed to harsh weather, salt water, and most chemicals.
    Thread Size
    Wd.
    Ht.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    4-40
    		1/4"1/16"—100000000000000
    5-40
    		5/16"3/32"—10000000000000
    6-32
    		5/16"3/32"—10000000000000
    10-24
    		3/8"7/64"—10000000000000
    12-24
    		7/16"9/64"—10000000000000
    1/4"-20
    		7/16"5/32"—50000000000000
    1/4"-28
    		7/16"5/32"—50000000000000
    5/16"-18
    		1/2"3/16"—50000000000000
    5/16"-24
    		1/2"3/16"—50000000000000
    3/8"-16
    		9/16"7/32"—50000000000000
    3/8"-24
    		9/16"7/32"—50000000000000
    7/16"-14
    		11/16"1/4"ASME B18.2.210000000000000
    7/16"-20
    		11/16"1/4"ASME B18.2.210000000000000
    1/2"-13
    		3/4"5/16"—50000000000000
    1/2"-20
    		3/4"5/16"—500000000000000
    9/16"-12
    		7/8"5/16"ASME B18.2.210000000000000
    9/16"-18
    		7/8"5/16"ASME B18.2.210000000000000
    5/8"-11
    		15/16"3/8"—10000000000000
    5/8"-18
    		15/16"3/8"—10000000000000
    3/4"-10
    		1 1/8"27/64"—10000000000000
    3/4"-16
    		1 1/8"27/64"—10000000000000
    7/8"-9
    		1 5/16"31/64"ASME B18.2.2100000000000000
    7/8"-14
    		1 5/16"31/64"ASME B18.2.2100000000000000
    7/8"-20
    		1 5/16"31/64"ASME B18.2.2100000000000000
    1"-8
    		1 1/2"35/64"ASME B18.2.2100000000000000
    1"-12
    		1 1/2"35/64"ASME B18.2.2100000000000000
    1"-14
    		1 1/2"35/64"ASME B18.2.2100000000000000
    1 1/4"-12
    		1 7/8"23/32"ASME B18.2.2100000000000000
    1 1/2"-6
    		2 1/4"27/32"ASME B18.2.2100000000000000
    1 1/2"-12
    		2 1/4"27/32"ASME B18.2.2100000000000000
    2"-4 1/2
    		3"1 3/32"ASME B18.2.2100000000000000
    2"-12
    		3"1 3/32"ASME B18.2.2100000000000000
    M3 × 0.5 mm5.5 mm1.8 mmDIN 439B10000000000000
    M4 × 0.5 mm7 mm2.2 mmDIN 439B10000000000000
    M4 × 0.7 mm7 mm2.2 mmDIN 439B10000000000000
    M5 × 0.5 mm8 mm2.7 mmDIN 439B10000000000000
    M5 × 0.8 mm8 mm2.7 mmDIN 439, ISO 4035100000000000000
    M6 × 0.75 mm10 mm3.2 mmDIN 439B10000000000000
    M6 × 1 mm10 mm3.2 mmDIN 439, ISO 4035100000000000000
    M6 × 1 mm10 mm3.2 mmDIN 439B10000000000000
    M8 × 1 mm13 mm4 mmDIN 439, ISO 403550000000000000
    M8 × 1.25 mm13 mm4 mmDIN 439, ISO 4035100000000000000
    M8 × 1.25 mm13 mm4 mmDIN 439B10000000000000
    M10 × 1 mm17 mm5 mmDIN 439B10000000000000
    M10 × 1.25 mm17 mm5 mmDIN 439, ISO 403510000000000000
    M10 × 1.5 mm17 mm5 mmDIN 439, ISO 403550000000000000
    M10 × 1.5 mm17 mm5 mmDIN 439B10000000000000
    M12 × 1.25 mm19 mm6 mmDIN 439, ISO 403510000000000000
    M12 × 1.75 mm19 mm6 mmDIN 439, ISO 403510000000000000
    M12 × 1.75 mm19 mm6 mmDIN 439B10000000000000
    M14 × 1.5 mm22 mm7 mmDIN 439B10000000000000
    M14 × 2 mm22 mm7 mmDIN 439, ISO 403510000000000000
    M16 × 1.5 mm24 mm8 mmDIN 439, ISO 403510000000000000
    M16 × 1.5 mm24 mm8 mmDIN 439B10000000000000
    M16 × 2 mm24 mm8 mmDIN 439, ISO 403510000000000000
    M16 × 2 mm24 mm8 mmDIN 439B10000000000000
    M20 × 1.5 mm30 mm10 mmDIN 439B100000000000000
    M20 × 2.5 mm30 mm10 mmDIN 439, ISO 403510000000000000
    M22 × 1.5 mm32 mm11 mmDIN 439B100000000000000
    M22 × 2.5 mm32 mm11 mmDIN 439B100000000000000
    M24 × 1.5 mm36 mm12 mmDIN 439B100000000000000
    M24 × 3 mm36 mm12 mmDIN 439, ISO 4035100000000000000
    M30 × 1.5 mm46 mm15 mmDIN 439B100000000000000
    M30 × 2 mm46 mm15 mmDIN 439B100000000000000
     
    Highly-Corrosion-Resistant 316 Stainless Steel
    4-40
    		1/4"1/16"—10000000000000
    6-32
    		5/16"3/32"—10000000000000
    8-32
    		11/32"7/64"—10000000000000
    10-24
    		3/8"7/64"—10000000000000
    10-32
    		3/8"7/64"—10000000000000
    1/4"-20
    		7/16"5/32"—10000000000000
    1/4"-28
    		7/16"5/32"—10000000000000
    5/16"-24
    		1/2"3/16"—10000000000000
    3/8"-16
    		9/16"7/32"—10000000000000
    3/8"-24
    		9/16"7/32"—10000000000000
    7/16"-20
    		11/16"1/4"—10000000000000
    1/2"-13
    		3/4"5/16"—10000000000000
    1/2"-20
    		3/4"5/16"—10000000000000
    9/16"-18
    		7/8"5/16"—100000000000000
    5/8"-18
    		15/16"3/8"—100000000000000
    3/4"-10
    		1 1/8"27/64"—100000000000000
    3/4"-16
    		1 1/8"27/64"—100000000000000
    1"-12
    		1 1/2"35/64"—100000000000000
    1"-14
    		1 1/2"35/64"—100000000000000
    1 1/4"-12
    		1 7/8"23/32"—100000000000000
    1 1/2"-6
    		2 1/4"27/32"—100000000000000
    2"-12
    		3"1 3/32"—100000000000000
    M6 × 0.75 mm10 mm3.2 mmDIN 439B, ISO 403510000000000000
    M6 × 1 mm10 mm3.2 mmDIN 439B, ISO 403510000000000000
    M8 × 1.25 mm13 mm4 mmDIN 439B, ISO 403510000000000000
    M10 × 1 mm17 mm5 mmDIN 439B, ISO 403510000000000000
    M10 × 1.25 mm17 mm5 mmDIN 439B10000000000000
    M12 × 1.25 mm19 mm6 mmDIN 439B10000000000000
    M12 × 1.5 mm19 mm6 mmDIN 439B, ISO 403510000000000000
    M12 × 1.75 mm19 mm6 mmDIN 439B, ISO 403510000000000000
    M14 × 1.5 mm22 mm7 mmDIN 439B, ISO 4035100000000000000
    M16 × 1.5 mm24 mm8 mmDIN 439B, ISO 4035100000000000000
    M16 × 2 mm24 mm8 mmDIN 439B, ISO 4035100000000000000
    M18 × 1.5 mm27 mm9 mmDIN 439B, ISO 4035100000000000000
    M20 × 1.5 mm30 mm10 mmDIN 439B, ISO 4035100000000000000
    M22 × 1.5 mm32 mm11 mmDIN 439B, ISO 4035100000000000000
    M24 × 2 mm36 mm12 mmDIN 439B, ISO 4035100000000000000
     
    Corrosion-Resistant Stainless Steel with Material Certificate
    18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Highly-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these nuts won't degrade when exposed to harsh weather, salt water, and most chemicals.
    Thread Size
    Wd.
    Ht.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    8-32
    		11/32"7/64"—100000000000000
    10-32
    		3/8"7/64"—10000000000000
    1 1/4"-7
    		1 7/8"23/32"ASME B18.2.2100000000000000
    M3 × 0.35 mm5.5 mm1.8 mmDIN 439B10000000000000
    M5 × 0.8 mm8 mm2.7 mmDIN 439B10000000000000
    M27 × 1.5 mm41 mm13.5 mmDIN 439B100000000000000
    M27 × 2 mm41 mm13.5 mmDIN 439B100000000000000
     
    Highly-Corrosion-Resistant 316 Stainless Steel
    M5 × 0.5 mm8 mm2.7 mmDIN 439B, ISO 403510000000000000
    M8 × 1 mm13 mm4 mmDIN 439B, ISO 403510000000000000
    M10 × 1.5 mm17 mm5 mmDIN 439B, ISO 403510000000000000
    M30 × 1.5 mm46 mm15 mmDIN 439B, ISO 4035100000000000000
     

    Mil. Spec. Hex Nuts

    These nuts are manufactured and tested to strict U.S. military standards for material and construction.
    Low-Strength Steel
    Image of Product. Front orientation. Hex Nuts. Mil. Spec. Hex Nuts.
    Rated Grade 2, Class 6, or lower, these nuts are about half as strong as medium-strength nuts. They are suitable for light duty fastening applications, such as securing access panels. Use them with screws that have a similar strength rating to avoid stripping threads during installation.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread
    Size
    Wd.
    Ht.
    Mil. Spec.
    Fastener Strength
    Grade/Class
    Pkg.
    Qty.
    Pkg.
    Steel
    2"-4 1/2
    		3"1 23/32"MIL-DTL-1222SAE Grade 2
    		1000000000000000
     
    Corrosion-Resistant Stainless Steel
    Image of Product. Front orientation. Hex Nuts. Mil. Spec. Hex Nuts.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Thread
    Size
    Wd.
    Ht.
    Mil. Spec.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    0-80
    		5/32"3/64"MS35650-314Fed. Spec. FF-N-836, Fed. Spec. QQ-P-35
    		500000000000000
    6-32
    		5/16"7/64"MS35649-264Fed. Spec. FF-N-836, Fed. Spec. QQ-P-35
    		2500000000000000
    10-24
    		3/8"1/8"MS35649-204Fed. Spec. FF-N-836, Fed. Spec. QQ-P-35
    		100000000000000
    10-32
    		3/8"1/8"MS35650-304Fed. Spec. FF-N-836, Fed. Spec. QQ-P-35
    		100000000000000
    1/4"-20
    		7/16"3/16"MS35649-2254Fed. Spec. FF-N-836, Fed. Spec. QQ-P-35
    		100000000000000
    1/4"-28
    		7/16"3/16"MS35650-3254Fed. Spec. FF-N-836, Fed. Spec. QQ-P-35
    		50000000000000
    1/4"-28
    		7/16"7/32"MS51972-1Fed. Spec. FF-N-836, Fed. Spec. QQ-P-35
    		100000000000000
    5/16"-18
    		1/2"17/64"MS51971-2Fed. Spec. FF-N-836, Fed. Spec. QQ-P-35
    		100000000000000
    5/16"-18
    		9/16"7/32"MS35649-2314Fed. Spec. FF-N-836, Fed. Spec. QQ-P-35
    		50000000000000
    5/16"-24
    		1/2"17/64"MS51972-2Fed. Spec. FF-N-836, Fed. Spec. QQ-P-35
    		50000000000000
    5/16"-24
    		9/16"7/32"MS35650-3314Fed. Spec. FF-N-836, Fed. Spec. QQ-P-35
    		10000000000000
    3/8"-16
    		5/8"1/4"MS35649-2384Fed. Spec. FF-N-836, Fed. Spec. QQ-P-35
    		50000000000000
    3/8"-24
    		9/16"21/64"MS51972-3Fed. Spec. FF-N-836, Fed. Spec. QQ-P-35
    		50000000000000
    3/8"-24
    		5/8"1/4"MS35650-3384Fed. Spec. FF-N-836, Fed. Spec. QQ-P-35
    		10000000000000
    1/2"-13
    		3/4"7/16"MS51971-5Fed. Spec. FF-N-836, Fed. Spec. QQ-P-35
    		10000000000000
    1/2"-20
    		3/4"7/16"MS51972-5Fed. Spec. FF-N-836, Fed. Spec. QQ-P-35
    		10000000000000
    5/8"-11
    		15/16"35/64"MS51971-7Fed. Spec. FF-N-836, Fed. Spec. QQ-P-35
    		10000000000000
    3/4"-10
    		1 1/8"41/64"MS51971-8Fed. Spec. FF-N-836, Fed. Spec. QQ-P-35
    		10000000000000
     
    Corrosion-Resistant Stainless Steel with Material Certificate
    Image of Product. Front orientation. Hex Nuts. Mil. Spec. Hex Nuts.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Thread
    Size
    Wd.
    Ht.
    Mil. Spec.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    2-56
    		3/16"1/16"MS35649-224Fed. Spec. FF-N-836, Fed. Spec. QQ-P-35
    		25000000000000000
    4-40
    		1/4"3/32"MS35649-244Fed. Spec. FF-N-836, Fed. Spec. QQ-P-35
    		2500000000000000
    8-32
    		11/32"1/8"MS35649-284Fed. Spec. FF-N-836, Fed. Spec. QQ-P-35
    		100000000000000
    1/4"-20
    		7/16"7/32"MS51971-1Fed. Spec. FF-N-836, Fed. Spec. QQ-P-35
    		100000000000000
    3/8"-16
    		9/16"21/64"MS51971-3Fed. Spec. FF-N-836, Fed. Spec. QQ-P-35
    		50000000000000
     

    Hex Nut Assortments

    Image of Product. Front orientation. Hex Nuts. Hex Nut Assortments.
    Image of Product. Front orientation. Hex Nuts. Hex Nut Assortments.
    With a range of sizes on hand, you can use these assortments to fasten a variety of machinery and equipment.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Sizes Included
    No. of
    Pieces
    Specs.
    Met
    Container
    Type
    Each
    18-8 Stainless Steel
    1/4"-20 to 3/4"-1090—Plastic Box000000000000000
    2-56 to 1/4"-20700—Plastic Box00000000000000
    M2 to M12600DIN 934Plastic Box000000000000000
     

    Narrow-Profile Hex Nuts

    Image of Product. Bottom orientation. Hex Nuts. Narrow-Profile Hex Nuts.
    When you have limited space for tightening with a wrench, use these nuts. Since they’re about 20% narrower, they fit in tight spots where standard-profile nuts won't fit. Also known as small-pattern hex nuts.
    Steel
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    Steel
    4-40
    		3/16"1/16"10000000000000000
     
    Corrosion-Resistant Stainless Steel
    18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Highly-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these nuts won't degrade when exposed to harsh weather, salt water, and most chemicals.
    Thread Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    0-80
    		1/8"3/64"5000000000000000
    1-64
    		1/8"3/64"500000000000000
    1-72
    		7/64"1/16"500000000000000
    2-56
    		5/32"1/16"1000000000000000
    4-40
    		3/16"1/16"1000000000000000
    5-40
    		1/4"3/32"1000000000000000
    6-32
    		1/4"3/32"1000000000000000
    8-32
    		1/4"3/32"1000000000000000
    8-32
    		5/16"7/64"1000000000000000
    10-24
    		5/16"7/64"1000000000000000
    10-24
    		11/32"1/8"10000000000000000
    10-32
    		5/16"7/64"1000000000000000
    10-32
    		11/32"1/8"10000000000000000
     
    Highly-Corrosion-Resistant 316 Stainless Steel
    4-40
    		3/16"1/16"10000000000000
    5-40
    		1/4"3/32"10000000000000
    6-32
    		1/4"3/32"10000000000000
    8-32
    		1/4"3/32"5000000000000000
    8-32
    		5/16"7/64"10000000000000
    10-24
    		1/4"3/32"10000000000000
    10-24
    		5/16"7/64"5000000000000000
    10-24
    		11/32"1/8"10000000000000
    10-32
    		5/16"7/64"5000000000000000
    10-32
    		11/32"1/8"10000000000000
    M3.5 × 0.6 mm5.5 mm2.5 mm10000000000000
    M4 × 0.7 mm5.5 mm2.5 mm10000000000000
    M4 × 0.7 mm7 mm2.9 mm10000000000000
    M5 × 0.8 mm7 mm2.5 mm10000000000000
     
    Corrosion-Resistant Stainless Steel with Material Certificate
    Highly-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these nuts won't degrade when exposed to harsh weather, salt water, and most chemicals.
    Thread
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    Highly-Corrosion-Resistant 316 Stainless Steel
    10-32
    		1/4"3/32"100000000000000
    M3 × 0.5 mm5 mm1.7 mm10000000000000
    M5 × 0.8 mm7.5 mm2.9 mm10000000000000
     

    Heavy-Profile Hex Nuts

    About 10% wider and taller than standard-profile hex nuts, these handle heavier loads by distributing them over a larger area.
    Medium-Strength Steel
    Image of Product. Front orientation. Hex Nuts. Heavy-Profile Hex Nuts.
    These Grade 5 or Class 8 nuts are your go-to for fastening most machinery and equipment. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Pkg.
    Qty.
    Pkg.
    Steel
    1/4"-20
    		1/2"15/64"SAE Grade 5
    		10000000000000000
    5/16"-18
    		9/16"19/64"SAE Grade 5
    		10000000000000000
    3/8"-16
    		11/16"23/64"SAE Grade 5
    		5000000000000000
    7/16"-14
    		3/4"27/64"SAE Grade 5
    		250000000000000
    1/2"-13
    		7/8"31/64"SAE Grade 5
    		2500000000000000
    9/16"-12
    		15/16"35/64"SAE Grade 5
    		2500000000000000
    5/8"-11
    		1 1/16"39/64"SAE Grade 5
    		100000000000000
    3/4"-10
    		1 1/4"47/64"SAE Grade 5
    		1000000000000000
    7/8"-9
    		1 7/16"55/64"SAE Grade 5
    		500000000000000
    1 1/8"-7
    		1 13/16"1 7/64"SAE Grade 5
    		10000000000000
    1 1/4"-7
    		2"1 7/32"SAE Grade 5
    		10000000000000
    1 3/8"-6
    		2 3/16"1 11/32"SAE Grade 5
    		10000000000000
    1 1/2"-6
    		2 3/8"1 15/32"SAE Grade 5
    		10000000000000
    1 3/4"-5
    		2 3/4"1 23/32"SAE Grade 5
    		100000000000000
    2"-4 1/2
    		3 1/8"1 31/32"SAE Grade 5
    		100000000000000
    2 1/4"-4 1/2
    		3 1/2"2 13/64"SAE Grade 5
    		100000000000000
    2 1/2"-4
    		3 7/8"2 29/64"SAE Grade 5
    		100000000000000
     
    High-Strength Steel
    Image of Product. Front orientation. Hex Nuts. Heavy-Profile Hex Nuts.
    Rated Grade 8, Grade C, or Class 10, these nuts are about 25% stronger than medium-strength steel nuts. They are commonly used to fasten components in valves, pumps, motors, and other high-stress applications. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread Size
    Wd.,
    mm
    Ht.,
    mm
    Fastener Strength
    Grade/Class
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Steel
    M12 × 1.75 mm2210ISO Class 10
    		DIN 6915, ISO 47755000000000000000
    M16 × 2 mm2713ISO Class 10
    		DIN 6915, ISO 477550000000000000
    M20 × 2.5 mm3216ISO Class 10
    		DIN 6915, ISO 4775500000000000000
    M24 × 3 mm4119ISO Class 10
    		DIN 6915, ISO 477510000000000000
    M30 × 3.5 mm5024ISO Class 10
    		DIN 691510000000000000
     
    Extreme-Strength Steel
    Image of Product. Front orientation. Hex Nuts. Heavy-Profile Hex Nuts.
    These nuts are about 20% stronger than high-strength steel nuts. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Steel
    1/4"-20
    		1/2"15/64"ASTM Grade 2H
    		ASTM A194
    		100000000000000000
    1/4"-28
    		1/2"15/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1945000000000000000
    5/16"-18
    		9/16"19/64"ASTM Grade 2H
    		ASTM A194
    		5000000000000000
    5/16"-24
    		9/16"19/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1945000000000000000
    3/8"-16
    		11/16"23/64"ASTM Grade 2H
    		ASTM A194
    		5000000000000000
    3/8"-24
    		11/16"23/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194250000000000000
    7/16"-14
    		3/4"27/64"ASTM Grade 2H
    		ASTM A194
    		2500000000000000
    7/16"-20
    		3/4"27/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1942500000000000000
    1/2"-13
    		7/8"31/64"ASTM Grade 2H
    		ASTM A194
    		2500000000000000
    1/2"-20
    		7/8"31/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1942500000000000000
    9/16"-12
    		15/16"35/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194100000000000000
    5/8"-11
    		1 1/16"39/64"ASTM Grade 2H
    		ASTM A194
    		1000000000000000
    5/8"-18
    		1 1/16"39/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1942500000000000000
    3/4"-10
    		1 1/4"47/64"ASTM Grade 2H
    		ASTM A194
    		1000000000000000
    3/4"-16
    		1 1/4"47/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1941000000000000000
    7/8"-14
    		1 7/16"55/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1941000000000000000
    1"-8
    		1 5/8"63/64"ASTM Grade 2H
    		ASTM A194
    		500000000000000
    1"-12
    		1 5/8"63/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A19410000000000000
    1"-14
    		1 5/8"63/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194500000000000000
    1 1/8"-7
    		1 13/16"1 7/64"ASTM Grade 2H
    		ASTM A194
    		10000000000000
    1 1/8"-8
    		1 13/16"1 7/64"ASTM Grade 2H
    		ASTM A194
    		10000000000000
    1 1/8"-12
    		1 13/16"1 7/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A19410000000000000
    1 1/4"-7
    		2"1 7/32"ASTM Grade 2H
    		ASTM A194
    		10000000000000
    1 1/4"-8
    		2"1 7/32"ASTM Grade 2H
    		ASTM A194
    		10000000000000
    1 1/4"-12
    		2"1 7/32"ASTM Grade 2H
    		ASME B18.2.2, ASTM A19410000000000000
    1 3/8"-6
    		2 3/16"1 11/32"ASTM Grade 2H
    		ASME B18.2.2, ASTM A19410000000000000
    1 3/8"-8
    		2 3/16"1 11/32"ASTM Grade 2H
    		ASTM A194
    		10000000000000
    1 3/8"-12
    		2 3/16"1 11/32"ASTM Grade 2H
    		ASME B18.2.2, ASTM A19410000000000000
    1 1/2"-6
    		2 3/8"1 15/32"ASTM Grade 2H
    		ASTM A194
    		10000000000000
    1 1/2"-8
    		2 3/8"1 15/32"ASTM Grade 2H
    		ASTM A194
    		10000000000000
    1 1/2"-12
    		2 3/8"1 15/32"ASTM Grade 2H
    		ASTM A194
    		10000000000000
    1 5/8"-8
    		2 9/16"1 19/32"ASTM Grade 2H
    		ASME B18.2.2, ASTM A19410000000000000
    1 3/4"-5
    		2 3/4"1 23/32"ASTM Grade 2H
    		ASTM A194
    		100000000000000
    1 3/4"-8
    		2 3/4"1 23/32"ASTM Grade 2H
    		ASTM A194
    		100000000000000
    1 7/8"-8
    		2 15/16"1 27/32"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194100000000000000
    2"-4 1/2
    		3 1/8"1 31/32"ASTM Grade 2H
    		ASTM A194
    		100000000000000
    2"-8
    		3 1/8"1 31/32"ASTM Grade 2H
    		ASTM A194
    		100000000000000
    2 1/4"-4 1/2
    		3 1/2"2 13/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194100000000000000
    2 1/4"-8
    		3 1/2"2 13/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194100000000000000
    2 1/2"-4
    		3 7/8"2 29/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194100000000000000
    M10 × 1.5 mm19 mm12 mmASTM Grade 2H
    		ASTM A194
    		50000000000000
    M12 × 1.75 mm21 mm12 mmASTM Grade 2H
    		ASTM A194, DIN 691550000000000000
    M14 × 2 mm24 mm14 mmASTM Grade 2H
    		ASTM A194, DIN 691550000000000000
    M16 × 2 mm27 mm17 mmASTM Grade 2H
    		ASTM A194, DIN 691550000000000000
    M18 × 2.5 mm30 mm19 mmASTM Grade 2H
    		ASTM A194, DIN 6915500000000000000
    M20 × 2.5 mm33 mm20 mmASTM Grade 2H
    		ASTM A194, DIN 6915500000000000000
    M22 × 2.5 mm36 mm23 mmASTM Grade 2H
    		ASTM A194, DIN 691510000000000000
    M24 × 3 mm41 mm24 mmASTM Grade 2H
    		ASTM A194, DIN 691510000000000000
    M27 × 3 mm46 mm27 mmASTM Grade 2H
    		ASTM A194, DIN 691510000000000000
    M30 × 3.5 mm50 mm30 mmASTM Grade 2H
    		ASTM A194, DIN 6915100000000000000
    M33 × 3.5 mm55 mm33 mmASTM Grade 2H
    		ASTM A194, DIN 6915100000000000000
    M36 × 3 mm60 mm36 mmASTM Grade 2H
    		ASTM A194, DIN 6915100000000000000
    M36 × 4 mm60 mm36 mmASTM Grade 2H
    		ASTM A194, DIN 6915100000000000000
    M39 × 4 mm65 mm39 mmASTM Grade 2H
    		ASTM A194
    		100000000000000
    M42 × 3 mm70 mm42 mmASTM Grade 2H
    		ASTM A194
    		100000000000000
    M42 × 4.5 mm70 mm42 mmASTM Grade 2H
    		ASTM A194
    		100000000000000
    M45 × 4.5 mm75 mm45 mmASTM Grade 2H
    		ASTM A194
    		100000000000000
    M48 × 3 mm80 mm48 mmASTM Grade 2H
    		ASTM A194
    		100000000000000
    M48 × 5 mm80 mm48 mmASTM Grade 2H
    		ASTM A194
    		100000000000000
    M52 × 5 mm85 mm52 mmASTM Grade 2H
    		ASTM A194
    		100000000000000
    M56 × 5.5 mm90 mm56 mmASTM Grade 2H
    		ASTM A194
    		100000000000000
    M64 × 6 mm100 mm64 mmASTM Grade 2H
    		ASTM A194
    		100000000000000
     
    Low-Strength Steel
    Image of Product. Front orientation. Hex Nuts. Heavy-Profile Hex Nuts.
    Rated Grade 2, Class 6, or lower, these nuts are about half as strong as medium-strength nuts. They are suitable for light duty fastening applications, such as securing access panels. Use them with screws that have a similar strength rating to avoid stripping threads during installation.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread
    Size
    Wd.
    Ht.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Steel
    1/4"-20
    		1/2"15/64"ASME B18.2.210000000000000000
    5/16"-18
    		9/16"19/64"ASME B18.2.21000000000000000
    3/8"-16
    		11/16"23/64"ASME B18.2.210000000000000000
    7/16"-14
    		3/4"27/64"ASME B18.2.25000000000000000
    1/2"-13
    		7/8"31/64"ASME B18.2.25000000000000000
    9/16"-12
    		15/16"35/64"ASME B18.2.2, SAE J995250000000000000
    5/8"-11
    		1 1/16"39/64"ASME B18.2.22500000000000000
    3/4"-10
    		1 1/4"47/64"ASME B18.2.22500000000000000
    1"-8
    		1 5/8"63/64"ASME B18.2.2500000000000000
    1 1/8"-7
    		1 13/16"1 7/64"ASME B18.2.2500000000000000
    1 1/4"-7
    		2"1 7/32"ASME B18.2.2500000000000000
    1 3/8"-6
    		2 3/16"1 11/32"ASME B18.2.210000000000000
    1 1/2"-6
    		2 3/8"1 15/32"ASME B18.2.210000000000000
    2"-4 1/2
    		3 1/8"1 31/32"ASME B18.2.2100000000000000
     
    Corrosion-Resistant Stainless Steel
    Image of Product. Front orientation. Hex Nuts. Heavy-Profile Hex Nuts.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Highly-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these nuts won't degrade when exposed to harsh weather, salt water, and most chemicals.
    Thread
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    1/4"-20
    		1/2"15/64"100000000000000000
    1/4"-28
    		1/2"15/64"500000000000000
    5/16"-18
    		9/16"19/64"500000000000000
    5/16"-24
    		9/16"19/64"250000000000000
    3/8"-16
    		11/16"23/64"250000000000000
    3/8"-24
    		11/16"23/64"100000000000000
    7/16"-14
    		3/4"27/64"100000000000000
    7/16"-20
    		3/4"27/64"100000000000000
    1/2"-13
    		7/8"31/64"100000000000000
    1/2"-20
    		7/8"31/64"50000000000000
    9/16"-12
    		15/16"35/64"50000000000000
    5/8"-11
    		1 1/16"39/64"1000000000000000
    5/8"-18
    		1 1/16"39/64"50000000000000
    3/4"-10
    		1 1/4"47/64"50000000000000
    3/4"-16
    		1 1/4"47/64"10000000000000
    7/8"-9
    		1 7/16"55/64"10000000000000
    1 1/8"-7
    		1 13/16"1 7/64"10000000000000
    1 1/4"-7
    		2"1 7/32"10000000000000
    1 1/2"-6
    		2 3/8"1 15/32"100000000000000
     
    Highly-Corrosion-Resistant 316 Stainless Steel
    1/4"-20
    		1/2"15/64"5000000000000000
    1/4"-28
    		1/2"15/64"2500000000000000
    5/16"-18
    		9/16"19/64"250000000000000
    5/16"-24
    		9/16"19/64"100000000000000
    3/8"-16
    		11/16"23/64"100000000000000
    3/8"-24
    		11/16"23/64"50000000000000
    7/16"-14
    		3/4"27/64"100000000000000
    7/16"-20
    		3/4"27/64"50000000000000
    1/2"-13
    		7/8"31/64"50000000000000
    1/2"-20
    		7/8"31/64"500000000000000
    5/8"-11
    		1 1/16"39/64"50000000000000
    5/8"-18
    		1 1/16"39/64"10000000000000
    3/4"-10
    		1 1/4"47/64"10000000000000
    3/4"-16
    		1 1/4"47/64"10000000000000
    7/8"-9
    		1 7/16"55/64"10000000000000
    1"-8
    		1 5/8"63/64"10000000000000
    1 1/8"-7
    		1 13/16"1 7/64"10000000000000
    1 1/4"-7
    		2"1 7/32"10000000000000
    1 1/2"-6
    		2 3/8"1 15/32"100000000000000
    1 3/4"-5
    		2 3/4"1 23/32"100000000000000
     
    Corrosion-Resistant Stainless Steel with Material Certificate
    Image of Product. Front orientation. Hex Nuts. Heavy-Profile Hex Nuts.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Highly-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these nuts won't degrade when exposed to harsh weather, salt water, and most chemicals.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Thread
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    1"-8
    		1 5/8"63/64"100000000000000
    1 3/8"-6
    		2 3/16"1 11/32"10000000000000
    1 3/4"-5
    		2 3/4"1 23/32"100000000000000
    2"-4 1/2
    		3 1/8"1 31/32"100000000000000
     
    Highly-Corrosion-Resistant 316 Stainless Steel
    1 3/8"-6
    		2 3/16"1 11/32"100000000000000
    2"-4 1/2
    		3 1/8"1 31/32"100000000000000
     
    Medium-Strength Steel with Material Certificate
    Image of Product. Front orientation. Hex Nuts. Heavy-Profile Hex Nuts.
    These Grade 5 or Class 8 nuts are your go-to for fastening most machinery and equipment. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Pkg.
    Qty.
    Pkg.
    Steel
    1"-8
    		1 5/8"63/64"SAE Grade 5
    		5000000000000000
     
    Extreme-Strength Steel with Material Certificate
    Image of Product. Front orientation. Hex Nuts. Heavy-Profile Hex Nuts.
    These nuts are about 20% stronger than high-strength steel nuts. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Steel
    7/8"-9
    		1 7/16"55/64"ASTM Grade 2H
    		ASTM A194
    		10000000000000000
     

    Heavy-Profile Hex Nuts for High-Pressure Applications

    Image of Product. Bottom orientation. Hex Nuts. Heavy-Profile Hex Nuts for High-Pressure Applications.
    These nuts are hardened, so they maintain their strength under high pressure and temperature. Pair them with ASTM A193 screws to fasten critical components, such as valves and flanges, in pressure tanks, boilers, and heat exchangers. About 10% wider and taller than standard-profile hex nuts, these handle heavier loads by distributing them over a larger area.
    High-Strength Steel
    Rated Grade 7 or Grade 8, these nuts are about 25% stronger than medium-strength steel nuts. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Steel
    1/4"-20
    		1/2"15/64"ASTM Grade 7
    		ASTM A194
    		1000000000000000
    3/8"-16
    		11/16"23/64"ASTM Grade 7
    		ASTM A194
    		100000000000000
    1/2"-13
    		7/8"31/64"ASTM Grade 7
    		ASTM A194
    		1000000000000000
    5/8"-11
    		1 1/16"39/64"ASTM Grade 7
    		ASTM A194
    		1000000000000000
    3/4"-10
    		1 1/4"47/64"ASTM Grade 7
    		ASTM A194
    		1000000000000000
    7/8"-9
    		1 7/16"55/64"ASTM Grade 7
    		ASTM A194
    		50000000000000
    1"-8
    		1 5/8"63/64"ASTM Grade 7
    		ASTM A194
    		500000000000000
    1 1/8"-7
    		1 13/16"1 7/64"ASTM Grade 7
    		ASTM A194
    		10000000000000
    1 1/8"-8
    		1 13/16"1 7/64"ASTM Grade 7
    		ASTM A194
    		10000000000000
    1 1/4"-7
    		2"1 7/32"ASTM Grade 7
    		ASTM A194
    		10000000000000
    1 1/4"-8
    		2"1 7/32"ASTM Grade 7
    		ASTM A194
    		10000000000000
     
    Corrosion-Resistant Stainless Steel
    18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Highly-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these nuts won't degrade when exposed to harsh weather, salt water, and most chemicals.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    1/4"-28
    		1/2"15/64"ASTM Grade 8
    		ASTM A194
    		1000000000000000
    5/16"-24
    		9/16"19/64"ASTM Grade 8
    		ASTM A194
    		100000000000000
    3/8"-24
    		11/16"23/64"ASTM Grade 8
    		ASTM A194
    		100000000000000
    7/16"-14
    		3/4"27/64"ASTM Grade 8
    		ASTM A194
    		100000000000000
    7/16"-20
    		3/4"27/64"ASTM Grade 8
    		ASTM A194
    		100000000000000
    1/2"-20
    		7/8"31/64"ASTM Grade 8
    		ASTM A194
    		100000000000000
    5/8"-18
    		1 1/16"39/64"ASTM Grade 8
    		ASTM A194
    		100000000000000
    3/4"-16
    		1 1/4"47/64"ASTM Grade 8
    		ASTM A194
    		100000000000000
    1"-14
    		1 5/8"63/64"ASTM Grade 8
    		ASTM A194
    		100000000000000
     
    Highly-Corrosion-Resistant 316 Stainless Steel
    1/4"-20
    		1/2"1/4"ASTM Grade 8M
    		ASTM A194
    		500000000000000
    5/16"-18
    		9/16"19/64"ASTM Grade 8M
    		ASTM A194
    		100000000000000
    3/8"-16
    		11/16"23/64"ASTM Grade 8M
    		ASTM A194
    		50000000000000
    7/16"-14
    		3/4"27/64"ASTM Grade 8M
    		ASTM A194
    		50000000000000
    5/8"-11
    		1 1/16"39/64"ASTM Grade 8M
    		ASTM A194
    		10000000000000
    3/4"-10
    		1 1/4"47/64"ASTM Grade 8M
    		ASTM A194
    		10000000000000
    1 1/8"-7
    		1 13/16"1 9/64"ASTM Grade 8M
    		ASTM A194
    		10000000000000
    1 1/4"-7
    		2"1 1/4"ASTM Grade 8M
    		ASTM A194
    		10000000000000
    1 1/4"-8
    		2"1 1/4"ASTM Grade 8M
    		ASTM A194
    		10000000000000
    1 1/2"-8
    		2 3/8"1 1/2"ASTM Grade 8M
    		ASTM A194
    		100000000000000
    1 5/8"-8
    		2 9/16"1 5/8"ASTM Grade 8M
    		ASTM A194
    		100000000000000
     
    Corrosion-Resistant Stainless Steel with Material Certificate
    18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Highly-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these nuts won't degrade when exposed to harsh weather, salt water, and most chemicals.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    1/4"-20
    		1/2"15/64"ASTM Grade 8
    		ASTM A194
    		2500000000000000
    5/16"-18
    		9/16"19/64"ASTM Grade 8
    		ASTM A194
    		100000000000000
    3/8"-16
    		11/16"23/64"ASTM Grade 8
    		ASTM A194
    		100000000000000
    1/2"-13
    		7/8"31/64"ASTM Grade 8
    		ASTM A194
    		1000000000000000
    5/8"-11
    		1 1/16"39/64"ASTM Grade 8
    		ASTM A194
    		500000000000000
    3/4"-10
    		1 1/4"47/64"ASTM Grade 8
    		ASTM A194
    		10000000000000
    7/8"-9
    		1 7/16"55/64"ASTM Grade 8
    		ASTM A194
    		10000000000000
    1"-8
    		1 5/8"63/64"ASTM Grade 8
    		ASTM A194
    		10000000000000
    1 1/8"-7
    		1 13/16"1 7/64"ASTM Grade 8
    		ASTM A194
    		100000000000000
    1 1/4"-7
    		2"1 7/32"ASTM Grade 8
    		ASTM A194
    		100000000000000
     
    Highly-Corrosion-Resistant 316 Stainless Steel
    1/2"-13
    		7/8"31/64"ASTM Grade 8M
    		ASTM A194
    		50000000000000
    7/8"-9
    		1 7/16"55/64"ASTM Grade 8M
    		ASTM A194
    		10000000000000
    1"-8
    		1 5/8"63/64"ASTM Grade 8M
    		ASTM A194
    		10000000000000
    1 1/8"-8
    		1 13/16"1 9/64"ASTM Grade 8M
    		ASTM A194
    		10000000000000
    1 1/2"-6
    		2 3/8"1 1/2"ASTM Grade 8M
    		ASTM A194
    		100000000000000
    1 3/4"-8
    		2 3/4"1 3/4"ASTM Grade 8M
    		ASTM A194
    		100000000000000
    2"-8
    		3 1/8"2 1/64"ASTM Grade 8M
    		ASTM A194
    		100000000000000
     

    Left-Hand-Thread Hex Nuts

    Image of Product. Front orientation. Contains Annotated, MultipleImages. Hex Nuts. Left-Hand-Thread Hex Nuts.
    These nuts tighten when turned to the left. Use them with left-hand rods and screws to prevent counterclockwise-moving parts from loosening.
    Medium-Strength Steel
    These Grade 5 or Class 8 nuts are your go-to for fastening most machinery and equipment. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Pkg.
    Qty.
    Pkg.
    Steel
    1/4"-20
    		7/16"7/32"SAE Grade 5
    		100000000000000000
    1/4"-28
    		7/16"7/32"SAE Grade 5
    		10000000000000000
    5/16"-18
    		1/2"17/64"SAE Grade 5
    		500000000000000
    5/16"-24
    		1/2"17/64"SAE Grade 5
    		500000000000000
    3/8"-16
    		9/16"21/64"SAE Grade 5
    		5000000000000000
    3/8"-24
    		9/16"21/64"SAE Grade 5
    		5000000000000000
    7/16"-14
    		11/16"3/8"SAE Grade 5
    		250000000000000
    7/16"-20
    		11/16"3/8"SAE Grade 5
    		250000000000000
    1/2"-13
    		3/4"7/16"SAE Grade 5
    		2500000000000000
    1/2"-20
    		3/4"7/16"SAE Grade 5
    		2500000000000000
    9/16"-18
    		7/8"31/64"SAE Grade 5
    		2500000000000000
    5/8"-11
    		15/16"35/64"SAE Grade 5
    		100000000000000
    5/8"-18
    		15/16"35/64"SAE Grade 5
    		100000000000000
    3/4"-10
    		1 1/8"41/64"SAE Grade 5
    		1000000000000000
    3/4"-16
    		1 1/8"41/64"SAE Grade 5
    		1000000000000000
    7/8"-9
    		1 5/16"3/4"SAE Grade 5
    		500000000000000
    7/8"-14
    		1 5/16"3/4"SAE Grade 5
    		500000000000000
    1"-8
    		1 1/2"55/64"SAE Grade 5
    		10000000000000
    1 1/8"-7
    		1 11/16"31/32"SAE Grade 5
    		10000000000000
    1 1/4"-7
    		1 7/8"1 1/16"SAE Grade 5
    		10000000000000
    1 1/4"-12
    		1 7/8"1 1/16"SAE Grade 5
    		10000000000000
    1 1/2"-6
    		2 1/4"1 9/32"SAE Grade 5
    		100000000000000
     
    Low-Strength Steel
    Rated Grade 2, Class 6, or lower, these nuts are about half as strong as medium-strength nuts. They are suitable for light duty fastening applications, such as securing access panels. Use them with screws that have a similar strength rating to avoid stripping threads during installation.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Pkg.
    Qty.
    Pkg.
    Steel
    1/4"-20
    		7/16"7/32"SAE Grade 2
    		100000000000000000
    1/4"-28
    		7/16"7/32"SAE Grade 2
    		10000000000000000
    3/8"-16
    		9/16"21/64"SAE Grade 2
    		250000000000000
    3/8"-24
    		9/16"21/64"SAE Grade 2
    		5000000000000000
    1/2"-20
    		3/4"7/16"SAE Grade 2
    		2500000000000000
    5/8"-11
    		15/16"35/64"SAE Grade 2
    		1000000000000000
    5/8"-18
    		15/16"35/64"SAE Grade 2
    		1000000000000000
    3/4"-10
    		1 1/8"41/64"SAE Grade 2
    		50000000000000
    3/4"-16
    		1 1/8"41/64"SAE Grade 2
    		1000000000000000
    1"-8
    		1 1/2"55/64"SAE Grade 2
    		10000000000000
    1"-14
    		1 1/2"55/64"SAE Grade 2
    		10000000000000
    1 1/8"-7
    		1 11/16"31/32"SAE Grade 2
    		10000000000000
    1 1/4"-7
    		1 7/8"1 1/16"SAE Grade 2
    		100000000000000
    1 1/4"-12
    		1 7/8"1 1/16"SAE Grade 2
    		100000000000000
    1 1/2"-6
    		2 1/4"1 9/32"SAE Grade 2
    		100000000000000
     
    Corrosion-Resistant Stainless Steel
    18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Highly-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these nuts won't degrade when exposed to harsh weather, salt water, and most chemicals.
    Thread Size
    Wd.
    Ht.
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    1/4"-20
    		7/16"7/32"—25000000000000000
    1/4"-28
    		7/16"7/32"—2500000000000000
    5/16"-18
    		1/2"17/64"—100000000000000
    5/16"-24
    		1/2"17/64"—100000000000000
    3/8"-16
    		9/16"21/64"—100000000000000
    3/8"-24
    		9/16"21/64"—100000000000000
    1/2"-13
    		3/4"7/16"—50000000000000
    1/2"-20
    		3/4"7/16"—50000000000000
    5/8"-11
    		15/16"35/64"—10000000000000
    5/8"-18
    		15/16"35/64"—10000000000000
    3/4"-10
    		1 1/8"41/64"—10000000000000
    3/4"-16
    		1 1/8"41/64"—10000000000000
    7/8"-9
    		1 5/16"3/4"—10000000000000
    7/8"-14
    		1 5/16"3/4"—100000000000000
    1"-8
    		1 1/2"55/64"—100000000000000
    1"-14
    		1 1/2"55/64"—100000000000000
    1 1/8"-7
    		1 11/16"31/32"—100000000000000
    1 1/4"-7
    		1 7/8"1 1/16"—100000000000000
    1 1/4"-12
    		1 7/8"1 1/16"—100000000000000
    1 1/2"-6
    		2 1/4"1 9/32"—100000000000000
    M3 × 0.5 mm5.5 mm2.4 mmDIN 934L1000000000000000
    M4 × 0.7 mm7 mm3.2 mmDIN 934L100000000000000
    M5 × 0.8 mm8 mm4 mmDIN 934L2500000000000000
    M6 × 1 mm10 mm5 mmDIN 934L100000000000000
    M8 × 1.25 mm13 mm6.5 mmDIN 934L100000000000000
    M10 × 1.5 mm17 mm8 mmDIN 934L50000000000000
    M12 × 1.75 mm19 mm10 mmDIN 934L500000000000000
    M14 × 2 mm22 mm11 mmDIN 934L10000000000000
    M16 × 2 mm24 mm13 mmDIN 934L10000000000000
    M20 × 2.5 mm30 mm16 mmDIN 934L10000000000000
    M24 × 3 mm36 mm19 mmDIN 934L100000000000000
    M30 × 3.5 mm46 mm24 mmDIN 934L100000000000000
     
    Highly-Corrosion-Resistant 316 Stainless Steel
    10-24
    		5/16"5/32"—1000000000000
    1/4"-20
    		7/16"7/32"—100000000000000
    1/4"-28
    		7/16"7/32"—100000000000000
    5/16"-18
    		1/2"17/64"—10000000000000
    5/16"-24
    		1/2"17/64"—100000000000000
    3/8"-16
    		9/16"21/64"—100000000000000
    3/8"-24
    		9/16"21/64"—100000000000000
    7/16"-14
    		11/16"3/8"—100000000000000
    7/16"-20
    		11/16"3/8"—100000000000000
    1/2"-13
    		3/4"7/16"—10000000000000
    1/2"-20
    		3/4"7/16"—100000000000000
    5/8"-11
    		15/16"35/64"—100000000000000
    5/8"-18
    		15/16"35/64"—100000000000000
    3/4"-16
    		1 1/8"41/64"—100000000000000
    7/8"-9
    		1 5/16"3/4"—100000000000000
    7/8"-14
    		1 5/16"3/4"—100000000000000
    1"-8
    		1 1/2"55/64"—100000000000000
    1"-14
    		1 1/2"55/64"—100000000000000
    1 1/4"-7
    		1 7/8"1 1/16"—100000000000000
    1 1/4"-12
    		1 7/8"1 1/16"—100000000000000
    1 1/2"-6
    		2 1/4"1 9/32"—1000000000000000
     

    Mil. Spec. Narrow-Profile Hex Nuts

    Image of Product. Bottom orientation. Hex Nuts. Mil. Spec. Narrow-Profile Hex Nuts.
    These nuts are manufactured and tested to strict U.S. military standards for material and construction. They are about 20% narrower to fit in tight spots where standard-profile nuts won't fit. Also known as small-pattern hex nuts.
    Corrosion-Resistant Stainless Steel
    18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Thread
    Size
    Wd.
    Ht.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    0-80
    		1/8"3/64"Fed. Spec. FF-N-836, NAS671C010000000000000000
    2-56
    		5/32"1/16"Fed. Spec. FF-N-836, NAS671C2100000000000000
    4-40
    		3/16"1/16"Fed. Spec. FF-N-836, NAS671C4100000000000000
    8-32
    		5/16"7/64"Fed. Spec. FF-N-836, NAS671C8100000000000000
    10-32
    		11/32"1/8"Fed. Spec. FF-N-836, NAS671C10500000000000000
     
    Corrosion-Resistant Stainless Steel with Material Certificate
    18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Thread
    Size
    Wd.
    Ht.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    6-32
    		1/4"3/32"Fed. Spec. FF-N-836, NAS671C61000000000000000
     

    Thin-Heavy-Profile Hex Nuts

    About half the height of standard-profile hex nuts and 10% wider, these fit in spaces with low clearance and handle heavier loads by distributing them over a larger area. You can also use them as jam nuts by threading them against another hex nut to hold it in place.
    Extreme-Strength Steel
    Image of Product. Front orientation. Hex Nuts. Thin-Heavy-Profile Hex Nuts.
    These nuts are about 20% stronger than high-strength steel nuts. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Steel
    1/4"-20
    		1/2"11/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194100000000000000
    3/8"-16
    		11/16"15/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194500000000000000
    7/16"-14
    		3/4"17/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A19410000000000000
    1/2"-13
    		7/8"19/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194500000000000000
    5/8"-11
    		1 1/16"23/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A19410000000000000
    3/4"-10
    		1 1/4"27/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A19410000000000000
    7/8"-9
    		1 7/16"31/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A19410000000000000
    1"-8
    		1 5/8"35/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A19410000000000000
    1 1/8"-7
    		1 13/16"39/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A19410000000000000
    1 1/4"-7
    		2"23/32"ASTM Grade 2H
    		ASME B18.2.2, ASTM A19410000000000000
    1 3/8"-6
    		2 3/16"25/32"ASTM Grade 2H
    		ASME B18.2.2, ASTM A19410000000000000
    1 1/2"-6
    		2 3/8"27/32"ASTM Grade 2H
    		ASME B18.2.2, ASTM A19410000000000000
    1 3/4"-5
    		2 3/4"31/32"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194100000000000000
    2"-4 1/2
    		3 1/8"1 3/32"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194100000000000000
     
    Low-Strength Steel
    Image of Product. Front orientation. Hex Nuts. Thin-Heavy-Profile Hex Nuts.
    Rated Grade 2, Class 6, or lower, these nuts are about half as strong as medium-strength nuts. They are suitable for light duty fastening applications, such as securing access panels. Use them with screws that have a similar strength rating to avoid stripping threads during installation.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Pkg.
    Qty.
    Pkg.
    Steel
    1/4"-20
    		1/2"11/64"SAE Grade 2
    		10000000000000000
    5/16"-18
    		9/16"13/64"SAE Grade 2
    		1000000000000000
    3/8"-16
    		11/16"15/64"SAE Grade 2
    		10000000000000000
    7/16"-14
    		3/4"17/64"SAE Grade 2
    		500000000000000
    1/2"-13
    		7/8"19/64"SAE Grade 2
    		5000000000000000
    5/8"-11
    		1 1/16"23/64"SAE Grade 2
    		2500000000000000
    3/4"-10
    		1 1/4"27/64"SAE Grade 2
    		2500000000000000
    7/8"-9
    		1 7/16"31/64"SAE Grade 2
    		1000000000000000
    1"-8
    		1 5/8"35/64"SAE Grade 2
    		1000000000000000
    1 1/8"-7
    		1 13/16"39/64"SAE Grade 2
    		500000000000000
    1 1/4"-7
    		2"23/32"SAE Grade 2
    		500000000000000
    1 1/2"-6
    		2 3/8"27/32"SAE Grade 2
    		10000000000000
    1 3/4"-5
    		2 3/4"31/32"SAE Grade 2
    		10000000000000
    2"-4 1/2
    		3 1/8"1 3/32"SAE Grade 2
    		100000000000000
    2 1/2"-4
    		3 7/8"1 29/64"SAE Grade 2
    		100000000000000
     
    Corrosion-Resistant Stainless Steel
    Image of Product. Front orientation. Hex Nuts. Thin-Heavy-Profile Hex Nuts.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Thread
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    1/4"-20
    		1/2"11/64"2500000000000000
    5/16"-18
    		9/16"13/64"200000000000000
    3/8"-16
    		11/16"15/64"100000000000000
    1/2"-13
    		7/8"19/64"1000000000000000
    5/8"-11
    		1 1/16"23/64"500000000000000
    3/4"-10
    		1 1/4"27/64"10000000000000
    7/8"-9
    		1 7/16"31/64"10000000000000
    1"-8
    		1 5/8"35/64"10000000000000
    1 1/8"-7
    		1 13/16"39/64"10000000000000
    1 1/4"-7
    		2"23/32"10000000000000
    1 1/2"-6
    		2 3/8"27/32"100000000000000
    1 3/4"-5
    		2 3/4"31/32"100000000000000
     

    JIS Hex Nuts

    Image of Product. Front orientation. Hex Nuts. Standard Profile.
    Fasten parts and components that are made to Japanese Industrial Standards.
    Corrosion-Resistant Stainless Steel
    18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Thread Size
    Wd.,
    mm
    Ht.,
    mm
    JIS
    Specification
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    M3 × 0.5 mm5.52.4JIS B 1181
    		50000000000000000
    M4 × 0.7 mm73.2JIS B 1181
    		5000000000000000
    M5 × 0.8 mm84JIS B 1181
    		5000000000000000
    M6 × 1 mm105JIS B 1181
    		2500000000000000
    M8 × 1.25 mm126.5JIS B 1181
    		1000000000000000
    M10 × 1.25 mm148JIS B 1181
    		500000000000000
    M12 × 1.75 mm177JIS B 1181
    		100000000000000
    M14 × 2 mm198JIS B 1181
    		100000000000000
    M16 × 2 mm2210JIS B 1181
    		100000000000000
    M18 × 2.5 mm2411JIS B 1181
    		100000000000000
    M20 × 2.5 mm2712JIS B 1181
    		100000000000000
    M22 × 2.5 mm3013JIS B 1181
    		100000000000000
     

    High-Profile Hex Nuts

    Image of Product. Front orientation. Hex Nuts. High-Profile Hex Nuts.
    Slightly taller than standard-profile hex nuts, these have a larger gripping area so your wrench or socket won't slip off as you tighten them. They're often used in vehicles and machinery where fasteners can be difficult to reach.
    High-Strength Steel
    Rated Grade 8, Grade C, or Class 10, these nuts are about 25% stronger than medium-strength steel nuts. They are commonly used to fasten components in valves, pumps, motors, and other high-stress applications. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Steel
    3/8"-16
    		9/16"17/32"SAE Grade 8
    		SAE J995
    		100000000000000
    3/8"-24
    		9/16"17/32"SAE Grade 8
    		SAE J995
    		100000000000000
    7/16"-20
    		5/8"39/64"SAE Grade 8
    		SAE J995
    		2500000000000000
    1/2"-13
    		3/4"11/16"SAE Grade 8
    		SAE J995
    		10000000000000
    1/2"-20
    		3/4"11/16"SAE Grade 8
    		SAE J995
    		2500000000000000
    9/16"-18
    		7/8"49/64"SAE Grade 8
    		SAE J995
    		100000000000000
    5/8"-11
    		15/16"27/32"SAE Grade 8
    		SAE J995
    		10000000000000
    5/8"-18
    		15/16"27/32"SAE Grade 8
    		SAE J995
    		1000000000000000
    3/4"-10
    		1 1/16"1"SAE Grade 8
    		SAE J995
    		100000000000000
    3/4"-16
    		1 1/8"1"SAE Grade 8
    		SAE J995
    		1000000000000000
    7/8"-14
    		1 5/16"1 5/32"SAE Grade 8
    		SAE J995
    		500000000000000
    1"-8
    		1 1/2"1 5/16"SAE Grade 8
    		SAE J995
    		100000000000000
    1"-14
    		1 7/16"1 5/16"SAE Grade 8
    		SAE J995
    		500000000000000
    1 1/4"-12
    		1 13/16"1 5/8"SAE Grade 8
    		SAE J995
    		100000000000000
    1 1/2"-12
    		2 3/16"2"SAE Grade 8
    		SAE J995
    		100000000000000
     
    Corrosion-Resistant Stainless Steel
    18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Thread
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    1/4"-20
    		7/16"11/32"100000000000000
    5/16"-18
    		1/2"21/64"10000000000000
    3/8"-16
    		9/16"17/32"10000000000000
    1/2"-13
    		3/4"11/16"10000000000000
     

    Hex Nuts for High-Pressure Applications

    Image of Product. Front orientation. Hex Nuts. Hex Nuts for High-Pressure Applications.
    These nuts are hardened, so they maintain their strength under high pressure and temperature. Pair them with ASTM A193 screws to fasten critical components, such as valves and flanges, in pressure tanks, boilers, and heat exchangers.
    Corrosion-Resistant Stainless Steel
    Highly-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these nuts won't degrade when exposed to harsh weather, salt water, and most chemicals.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Highly-Corrosion-Resistant 316 Stainless Steel
    5/16"-18
    		1/2"17/64"ASTM Grade 8M
    		ASTM A194
    		5000000000000000
    3/8"-16
    		9/16"21/64"ASTM Grade 8M
    		ASTM A194
    		10000000000000
    1/2"-13
    		3/4"7/16"ASTM Grade 8M
    		ASTM A194
    		10000000000000
    5/8"-11
    		15/16"35/64"ASTM Grade 8M
    		ASTM A194
    		10000000000000
    3/4"-10
    		1 1/8"41/64"ASTM Grade 8M
    		ASTM A194
    		100000000000000
    1"-8
    		1 1/2"55/64"ASTM Grade 8M
    		ASTM A194
    		100000000000000
     

    Mil. Spec. Thin-Profile Hex Nuts

    Image of Product. Front orientation. Hex Nuts. Mil. Spec. Thin-Profile Hex Nuts.
    These nuts are manufactured and tested to strict U.S. military standards for material and construction. About half the height of standard-profile nuts, they fit in spaces with low clearance. You can also use them as jam nuts by threading them against another hex nut to hold it in place.
    Corrosion-Resistant Stainless Steel
    18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Thread
    Size
    Wd.
    Ht.
    Mil.
    Spec.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    1/4"-20
    		7/16"5/32"MS35691-3Fed. Spec. FF-N-836
    		5000000000000000
    1/4"-28
    		7/16"5/32"MS35691-7Fed. Spec. FF-N-836
    		10000000000000
    5/16"-18
    		1/2"3/16"MS35691-11Fed. Spec. FF-N-836
    		500000000000000
    5/16"-24
    		1/2"3/16"MS35691-15Fed. Spec. FF-N-836
    		500000000000000
    3/8"-16
    		9/16"7/32"MS35691-19Fed. Spec. FF-N-836
    		10000000000000
    3/8"-24
    		9/16"7/32"MS35691-23Fed. Spec. FF-N-836
    		10000000000000
    7/16"-14
    		11/16"1/4"MS35691-27Fed. Spec. FF-N-836
    		10000000000000
    7/16"-20
    		11/16"1/4"MS35691-31Fed. Spec. FF-N-836
    		10000000000000
    1/2"-20
    		3/4"5/16"MS35691-39Fed. Spec. FF-N-836
    		10000000000000
    5/8"-11
    		15/16"3/8"MS35691-51Fed. Spec. FF-N-836
    		100000000000000
    5/8"-18
    		15/16"3/8"MS35691-55Fed. Spec. FF-N-836
    		100000000000000
     
    Corrosion-Resistant Stainless Steel with Material Certificate
    18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Thread
    Size
    Wd.
    Ht.
    Mil.
    Spec.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    1/2"-13
    		3/4"5/16"MS35691-35Fed. Spec. FF-N-836
    		100000000000000
     

    Left-Hand-Thread Heavy-Profile Hex Nuts

    Image of Product. Front orientation. Contains Annotated, MultipleImages. Hex Nuts. Left-Hand-Thread Heavy-Profile Hex Nuts.
    These nuts tighten when turned to the left. Use them with left-hand rods and screws to prevent counterclockwise-moving parts from loosening. About 10% wider and taller than standard-profile hex nuts, these handle heavier loads by distributing them over a larger area.
    Medium-Strength Steel
    These Grade 5 or Class 8 nuts are your go-to for fastening most machinery and equipment. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Pkg.
    Qty.
    Pkg.
    Steel
    1/4"-20
    		1/2"15/64"SAE Grade 5
    		2500000000000000
    3/8"-16
    		11/16"23/64"SAE Grade 5
    		100000000000000
    1/2"-13
    		7/8"31/64"SAE Grade 5
    		1000000000000000
    5/8"-11
    		1 1/16"39/64"SAE Grade 5
    		50000000000000
    3/4"-10
    		1 1/4"47/64"SAE Grade 5
    		500000000000000
    1"-8
    		1 5/8"63/64"SAE Grade 5
    		10000000000000
     
    back to top