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    738 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

    Performance

    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.
    Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
    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.
    Black Corrosion-Resistant-Coated Steel—Combines a finished appearance with the rust resistance of stainless steel. The coating has been tested to extreme standards, including 1,000 hours of salt spray resistance, to hold up in wet and outdoor environments. Also known as black luster.
    Zinc-Flake-Coated Steel—The best zinc coating for long-term wear and rust resistance. This multilayer finish is tested to withstand at least 720 hours of salt spray. That's about five times the corrosion resistance of standard zinc plating. Like zinc yellow chromate, however, it doesn't hold up to harsh chemicals as well as stainless steel. These nuts are also embedded with lubricant for easy 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.
    Zinc-Plated 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 B18.2.210000000000000000
    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 B18.2.210000000000000000
    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 B18.2.210000000000000000
    1/2"-20
    		3/4"7/16"SAE Grade 5
    		ASME B18.2.210000000000000000
    9/16"-12
    		7/8"31/64"SAE Grade 5
    		ASME B18.2.25000000000000000
    9/16"-18
    		7/8"31/64"SAE Grade 5
    		ASME B18.2.22500000000000000
    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 B18.2.21000000000000000
    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 B18.2.21000000000000000
    1 1/8"-7
    		1 11/16"31/32"SAE Grade 5
    		ASME B18.2.21000000000000000
    1 1/8"-12
    		1 11/16"31/32"SAE Grade 5
    		ASME B18.2.21000000000000000
    1 1/4"-7
    		1 7/8"1 1/16"SAE Grade 5
    		ASME B18.2.2500000000000000
    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
    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
     
    Black-Oxide Steel
    1/4"-20
    		7/16"7/32"SAE Grade 5
    		ASME B18.2.2500000000000000
    1/4"-28
    		7/16"7/32"SAE Grade 5
    		ASME B18.2.25000000000000000
    5/16"-18
    		1/2"17/64"SAE Grade 5
    		ASME B18.2.2500000000000000
    5/16"-24
    		1/2"17/64"SAE Grade 5
    		ASME B18.2.25000000000000000
    3/8"-16
    		9/16"21/64"SAE Grade 5
    		ASME B18.2.2500000000000000
    3/8"-24
    		9/16"21/64"SAE Grade 5
    		ASME B18.2.22500000000000000
    7/16"-14
    		11/16"3/8"SAE Grade 5
    		ASME B18.2.2250000000000000
    7/16"-20
    		11/16"3/8"SAE Grade 5
    		ASME B18.2.2250000000000000
    1/2"-13
    		3/4"7/16"SAE Grade 5
    		ASME B18.2.22500000000000000
    1/2"-20
    		3/4"7/16"SAE Grade 5
    		ASME B18.2.2100000000000000
    9/16"-12
    		7/8"31/64"SAE Grade 5
    		ASME B18.2.2100000000000000
    9/16"-18
    		7/8"1/2"SAE Grade 5
    		ASME B18.2.2250000000000000
    5/8"-11
    		15/16"35/64"SAE Grade 5
    		ASME B18.2.2100000000000000
    5/8"-18
    		15/16"35/64"SAE Grade 5
    		ASME B18.2.2100000000000000
    3/4"-10
    		1 1/8"41/64"SAE Grade 5
    		ASME B18.2.21000000000000000
    3/4"-16
    		1 1/8"41/64"SAE Grade 5
    		ASME B18.2.21000000000000000
    7/8"-9
    		1 5/16"3/4"SAE Grade 5
    		ASME B18.2.250000000000000
    7/8"-14
    		1 5/16"3/4"SAE Grade 5
    		ASME B18.2.250000000000000
    1"-8
    		1 1/2"55/64"SAE Grade 5
    		ASME B18.2.250000000000000
    1"-14
    		1 1/2"7/8"SAE Grade 5
    		ASME B18.2.21000000000000000
    1 1/8"-7
    		1 11/16"31/32"SAE Grade 5
    		ASME B18.2.210000000000000
    1 1/8"-12
    		1 11/16"1"SAE Grade 5
    		ASME B18.2.21000000000000000
    1 1/4"-7
    		1 7/8"1 1/16"SAE Grade 5
    		ASME B18.2.210000000000000
    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 3/16"SAE Grade 5
    		ASME B18.2.210000000000000
    1 3/8"-12
    		2 1/16"1 3/16"SAE Grade 5
    		ASME B18.2.2100000000000000
    1 1/2"-6
    		2 1/4"1 5/16"SAE Grade 5
    		ASME B18.2.2100000000000000
    1 1/2"-12
    		2 1/4"1 5/16"SAE Grade 5
    		ASME B18.2.2100000000000000
     
    Black Corrosion-Resistant-Coated Steel
    1/4"-20
    		7/16"7/32"SAE Grade 5
    		ASME B18.2.2100000000000000
    5/16"-18
    		1/2"17/64"SAE Grade 5
    		ASME B18.2.21000000000000000
    3/8"-16
    		9/16"21/64"SAE Grade 5
    		ASME B18.2.250000000000000
    7/16"-14
    		11/16"3/8"SAE Grade 5
    		ASME B18.2.250000000000000
    1/2"-13
    		3/4"7/16"SAE Grade 5
    		ASME B18.2.250000000000000
    9/16"-12
    		7/8"31/64"SAE Grade 5
    		ASME B18.2.2500000000000000
    5/8"-11
    		15/16"35/64"SAE Grade 5
    		ASME B18.2.210000000000000
    3/4"-10
    		1 1/8"41/64"SAE Grade 5
    		ASME B18.2.210000000000000
    M6 × 1 mm10 mm5 mmISO Class 8
    		DIN 934100000000000000
    M8 × 1.25 mm13 mm6.5 mmISO Class 8
    		DIN 9341000000000000000
    M10 × 1.5 mm17 mm8 mmISO Class 8
    		DIN 9341000000000000000
    M12 × 1.75 mm19 mm10 mmISO Class 8
    		DIN 93450000000000000
     
    Zinc-Flake-Coated Steel
    M6 × 1 mm10 mm5 mmISO Class 8
    		DIN 9341000000000000000
    M8 × 1.25 mm13 mm6.5 mmISO Class 8
    		DIN 934500000000000000
    M10 × 1.5 mm17 mm8 mmISO Class 8
    		DIN 9342500000000000000
    M12 × 1.75 mm19 mm10 mmISO Class 8
    		DIN 9342500000000000000
     
    Steel
    1/4"-20
    		7/16"7/32"SAE Grade 5
    		ASME B18.2.21000000000000000
    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
     
    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.
    Zinc-Yellow-Chromate-Plated Steel—With a more durable finish than clear zinc plating, these nuts are suitable for most wet and outdoor environments. However, they won't hold up to the harsh chemicals that stainless steel can.
    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.
    Black Corrosion-Resistant-Coated Steel—Combines a finished appearance with the rust resistance of stainless steel. The coating has been tested to extreme standards, including 1,000 hours of salt spray resistance, to hold up in wet and outdoor environments. Also known as black luster.
    Zinc-Flake-Coated Steel—The most durable zinc coating, zinc flake is a multilayer finish that resists wear for long-term rust protection. Similar to zinc yellow-chromate, it won't hold up to harsh chemicals like stainless steel can.
    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.
    Zinc-Yellow-Chromate-Plated 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
    		—5000000000000000
    7/16"-20
    		11/16"3/8"SAE Grade 8
    		—500000000000000
    1/2"-13
    		3/4"7/16"SAE Grade 8
    		—500000000000000
    1/2"-20
    		3/4"7/16"SAE Grade 8
    		—5000000000000000
    9/16"-12
    		7/8"31/64"SAE Grade 8
    		—2500000000000000
    9/16"-18
    		7/8"31/64"SAE Grade 8
    		—2500000000000000
    5/8"-11
    		15/16"35/64"SAE Grade 8
    		—2500000000000000
    5/8"-18
    		15/16"35/64"SAE Grade 8
    		—2500000000000000
    3/4"-10
    		1 1/8"41/64"SAE Grade 8
    		—2000000000000000
    3/4"-16
    		1 1/8"41/64"SAE Grade 8
    		—1000000000000000
    7/8"-9
    		1 5/16"3/4"SAE Grade 8
    		—1000000000000000
    1"-8
    		1 1/2"55/64"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
    		—10000000000000
    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 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
     
    Black-Oxide Steel
    1/4"-20
    		7/16"7/32"SAE Grade 8
    		—1000000000000000
    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
    		—5000000000000000
    7/16"-20
    		11/16"3/8"SAE Grade 8
    		—5000000000000000
    1/2"-13
    		3/4"7/16"SAE Grade 8
    		—5000000000000000
    1/2"-20
    		3/4"7/16"SAE Grade 8
    		—5000000000000000
    9/16"-12
    		7/8"31/64"SAE Grade 8
    		—2500000000000000
    9/16"-18
    		7/8"31/64"SAE Grade 8
    		—2500000000000000
    5/8"-11
    		15/16"35/64"SAE Grade 8
    		—2500000000000000
    5/8"-18
    		15/16"35/64"SAE Grade 8
    		—2500000000000000
    3/4"-10
    		1 1/8"41/64"SAE Grade 8
    		—2000000000000000
    3/4"-16
    		1 1/8"41/64"SAE Grade 8
    		—2000000000000000
    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"-8
    		1 1/2"55/64"SAE Grade 8
    		—1000000000000000
    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
    		—100000000000000
    1 1/2"-12
    		2 1/4"1 9/32"SAE Grade 8
    		—100000000000000
    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
     
    Black Corrosion-Resistant-Coated Steel
    1/4"-20
    		7/16"7/32"SAE Grade 8
    		ASME B18.2.21000000000000000
    5/16"-18
    		1/2"17/64"SAE Grade 8
    		ASME B18.2.21000000000000000
    3/8"-16
    		9/16"21/64"SAE Grade 8
    		ASME B18.2.250000000000000
    1/2"-13
    		3/4"7/16"SAE Grade 8
    		ASME B18.2.2500000000000000
    M6 × 1 mm10 mm5 mmISO Class 10
    		DIN 9341000000000000000
    M8 × 1.25 mm13 mm6.5 mmISO Class 10
    		DIN 9341000000000000000
    M10 × 1.5 mm17 mm8 mmISO Class 10
    		DIN 9341000000000000000
    M12 × 1.75 mm19 mm10 mmISO Class 10
    		DIN 93450000000000000
     
    Zinc-Flake-Coated 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
    		—10000000000000000
    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
    		—5000000000000000
    7/16"-14
    		11/16"3/8"SAE Grade 8
    		—5000000000000000
    7/16"-20
    		11/16"3/8"SAE Grade 8
    		—250000000000000
    1/2"-13
    		3/4"7/16"SAE Grade 8
    		—2500000000000000
    1/2"-20
    		3/4"7/16"SAE Grade 8
    		—2500000000000000
    9/16"-12
    		7/8"31/64"SAE Grade 8
    		—2500000000000000
    9/16"-18
    		7/8"31/64"SAE Grade 8
    		—100000000000000
    5/8"-11
    		15/16"35/64"SAE Grade 8
    		—1000000000000000
    5/8"-18
    		15/16"35/64"SAE Grade 8
    		—100000000000000
    3/4"-10
    		1 1/8"41/64"SAE Grade 8
    		—1000000000000000
    3/4"-16
    		1 1/8"41/64"SAE Grade 8
    		—1000000000000000
    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"-8
    		1 1/2"55/64"SAE Grade 8
    		—500000000000000
    1"-14
    		1 1/2"55/64"SAE Grade 8
    		—500000000000000
    1 1/8"-7
    		1 11/16"31/32"SAE Grade 8
    		—10000000000000
    1 1/8"-12
    		1 11/16"31/32"SAE Grade 8
    		—10000000000000
    1 1/4"-7
    		1 7/8"1 1/16"SAE Grade 8
    		—10000000000000
    1 1/4"-12
    		1 7/8"1 1/16"SAE Grade 8
    		—10000000000000
    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
    2"-4 1/2
    		3"1 23/32"SAE Grade 8
    		—100000000000000
    2"-12
    		3"1 23/32"SAE Grade 8
    		—100000000000000
    M6 × 1 mm10 mm5 mmISO Class 10
    		DIN 93410000000000000000
    M8 × 1.25 mm13 mm6.5 mmISO Class 10
    		DIN 9345000000000000000
    M10 × 1.5 mm17 mm8 mmISO Class 10
    		DIN 9342500000000000000
    M12 × 1.75 mm19 mm10 mmISO Class 10
    		DIN 9342500000000000000
     
    Steel
    1/4"-20
    		7/16"7/32"SAE Grade 8
    		—1000000000000000
    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
     
    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.
    Zinc-Yellow-Chromate-Plated Steel—With a more durable finish than clear zinc plating, these nuts are suitable for most wet and outdoor environments. However, they won't hold up to the harsh chemicals that stainless steel can.
    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.
    Zinc-Yellow-Chromate-Plated Steel
    1/4"-20
    		7/16"7/32"SAE Grade 8
    		ASME B1.1, ASME B18.2.2, SAE J99510000000000000000
    5/16"-18
    		1/2"17/64"SAE Grade 8
    		ASME B1.1, ASME B18.2.2, SAE J99510000000000000000
    3/8"-16
    		9/16"21/64"SAE Grade 8
    		ASME B1.1, ASME B18.2.2, SAE J99510000000000000000
    1/2"-13
    		3/4"7/16"SAE Grade 8
    		ASME B1.1, ASME B18.2.2, SAE J9955000000000000000
    5/8"-11
    		15/16"35/64"SAE Grade 8
    		ASME B1.1, ASME B18.2.2, SAE J9952500000000000000
    3/4"-10
    		1 1/8"41/64"SAE Grade 8
    		ASME B1.1, ASME B18.2.2, SAE J9951000000000000000
    7/8"-14
    		1 5/16"3/4"SAE Grade 8
    		—1000000000000000
    1"-8
    		1 1/2"55/64"SAE Grade 8
    		ASME B1.1, ASME B18.2.2, SAE J995500000000000000
    1 1/2"-12
    		2 1/4"1 9/32"SAE Grade 8
    		—10000000000000
     
    Steel
    1"-8
    		1 1/2"55/64"SAE Grade 8
    		—1000000000000000
     
    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.
    Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
    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.
    Zinc-Plated 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 B18.2.21000000000000000
    3/8"-24
    		9/16"21/64"SAE Grade 2
    		ASME B18.2.21000000000000000
    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 B18.2.25000000000000000
    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 B18.2.22500000000000000
    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 B18.2.21000000000000000
    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 B18.2.2500000000000000
    1"-12
    		1 1/2"55/64"SAE Grade 2
    		ASME B18.2.2500000000000000
    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 B18.2.250000000000000
    1 1/4"-7
    		1 7/8"1 1/16"SAE Grade 2
    		ASME B18.2.250000000000000
    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
     
    Hot-Dipped Galvanized Steel
    1/4"-20
    		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
    3/8"-16
    		9/16"21/64"SAE Grade 2
    		ASME B18.2.21000000000000000
    7/16"-14
    		11/16"3/8"SAE Grade 2
    		ASME B18.2.2500000000000000
    1/2"-13
    		3/4"7/16"SAE Grade 2
    		ASME B18.2.25000000000000000
    5/8"-11
    		15/16"35/64"SAE Grade 2
    		ASME B18.2.22500000000000000
    3/4"-10
    		1 1/8"41/64"SAE Grade 2
    		ASME B18.2.2100000000000000
    7/8"-9
    		1 5/16"3/4"SAE Grade 2
    		ASME B18.2.21000000000000000
    1"-8
    		1 1/2"55/64"SAE Grade 2
    		ASME B18.2.250000000000000
    1 1/8"-7
    		1 11/16"31/32"SAE Grade 2
    		ASME B18.2.210000000000000
    1 1/4"-7
    		1 7/8"1 1/16"SAE Grade 2
    		ASME B18.2.210000000000000
    1 1/2"-6
    		2 1/4"1 9/32"SAE Grade 2
    		ASME B18.2.210000000000000
     
    Steel
    1/4"-20
    		7/16"7/32"SAE Grade 2
    		ASME B18.2.21000000000000000
    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
     
    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.
    Black-Oxide 18-8 Stainless Steel—Typically chosen for their appearance, these nuts have a dark, matte coating to create a finished look. They resist rust in wet and outdoor environments, but 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.
    High-Strength 17-4 PH Stainless Steel—The strongest stainless steel nuts we offer, these are comparable in strength to Grade 8 steel. Use them in high-stress applications, such as fastening structural parts and pump components. They won’t rust in wet and outdoor environments, but they can’t handle the harsh chemicals and acids that 316 stainless steel can.
    Seize-Resistant High-Strength 410 Stainless Steel—Resists sticking during installation and is comparable in strength to Grade 5 steel. These nuts are not as corrosion resistant as 18-8 stainless steel, so they're best for environments that experience occasional moisture.
    High-Temperature High-Strength A286 Stainless Steel—Stronger than 316 stainless steel and withstands higher temperatures. These nuts resist corrosion from chemicals, such as bleach and chlorine, but they won't hold up to salt water as well as 316 stainless steel.
    Ultra-Corrosion-Resistant Alloy 20 Stainless Steel—The most corrosion-resistant stainless steel nuts we offer, these hold up in just about any environment. They won't pit or weaken when exposed to salt water and harsh chemicals, such as sulfuric acid. Also known as Carpenter 20.
    Thread
    Size
    Wd.
    Ht.
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    1/4"-20
    		7/16"7/32"—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"-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"-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"-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
     
    Black-Oxide 18-8 Stainless Steel
    5/16"-18
    		1/2"17/64"—250000000000000
    5/16"-24
    		1/2"17/64"—250000000000000
    3/8"-24
    		9/16"21/64"—250000000000000
    7/16"-14
    		11/16"3/8"—100000000000000
    7/16"-20
    		11/16"3/8"—100000000000000
    1/2"-13
    		3/4"7/16"—100000000000000
    1/2"-20
    		3/4"7/16"—100000000000000
    5/8"-11
    		15/16"35/64"—50000000000000
    5/8"-18
    		15/16"35/64"—50000000000000
    3/4"-10
    		1 1/8"41/64"—10000000000000
    3/4"-16
    		1 1/8"41/64"—10000000000000
     
    Highly Corrosion-Resistant 316 Stainless Steel
    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"-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"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
     
    High-Strength 17-4 PH Stainless Steel
    1/4"-20
    		7/16"7/32"ASTM F594100000000000000
    5/16"-18
    		1/2"17/64"ASTM F594100000000000000
    3/8"-16
    		9/16"21/64"ASTM F594100000000000000
    3/4"-10
    		1 1/8"41/64"ASTM F594100000000000000
     
    Seize-Resistant High-Strength 410 Stainless Steel
    1/4"-20
    		7/16"7/32"—50000000000000
    5/16"-18
    		1/2"17/64"—50000000000000
    3/8"-16
    		9/16"21/64"—50000000000000
    1/2"-13
    		3/4"7/16"—500000000000000
     
    High-Temperature High-Strength A286 Stainless Steel
    1/4"-20
    		7/16"7/32"—100000000000000
    5/16"-18
    		1/2"17/64"—100000000000000
    3/8"-16
    		9/16"21/64"—100000000000000
    1/2"-13
    		3/4"7/16"—100000000000000
     
    Ultra-Corrosion-Resistant Alloy 20 Stainless Steel
    1/4"-20
    		7/16"7/32"—10000000000000
    3/8"-16
    		9/16"21/64"—10000000000000
    1/2"-13
    		3/4"7/16"—100000000000000
     
    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.
    Black-Oxide 18-8 Stainless Steel—Typically chosen for their appearance, these nuts have a dark, matte coating to create a finished look. They resist rust in wet and outdoor environments, but 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.
    High-Strength 17-4 PH Stainless Steel—The strongest stainless steel nuts we offer, these are comparable in strength to Grade 8 steel. Use them in high-stress applications, such as fastening structural parts and pump components. They won’t rust in wet and outdoor environments, but they can’t handle the harsh chemicals and acids 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
    1/4"-20
    		7/16"7/32"ASTM F5945000000000000000
    5/16"-18
    		1/2"17/64"ASTM F594500000000000000
    3/8"-16
    		9/16"21/64"ASTM F594250000000000000
    7/16"-28
    		11/16"3/8"—10000000000000
    1/2"-13
    		3/4"7/16"ASTM F594100000000000000
    11/16"-24
    		1"27/64"—100000000000000
    3/4"-10
    		1 1/8"41/64"ASTM F59450000000000000
     
    Black-Oxide 18-8 Stainless Steel
    1/4"-20
    		7/16"7/32"—500000000000000
    1/4"-28
    		7/16"7/32"—500000000000000
    3/8"-16
    		9/16"21/64"—250000000000000
     
    Highly Corrosion-Resistant 316 Stainless Steel
    5/8"-11
    		15/16"35/64"ASTM F59450000000000000
    1 1/8"-7
    		1 11/16"31/32"—10000000000000
    1 3/8"-6
    		2 1/16"1 11/64"—10000000000000
     
    High-Strength 17-4 PH Stainless Steel
    1/2"-13
    		3/4"7/16"ASTM F594100000000000000
     

    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.
    Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
    1/4"-20
    		1/2"15/64"SAE Grade 5
    		100000000000000000
    5/16"-18
    		9/16"19/64"SAE Grade 5
    		500000000000000
    3/8"-16
    		11/16"23/64"SAE Grade 5
    		5000000000000000
    1/2"-13
    		7/8"31/64"SAE Grade 5
    		2500000000000000
    5/8"-11
    		1 1/16"39/64"SAE Grade 5
    		1000000000000000
    3/4"-10
    		1 1/4"47/64"SAE Grade 5
    		1000000000000000
    1"-8
    		1 5/8"63/64"SAE Grade 5
    		10000000000000
    1 1/4"-7
    		2"1 7/32"SAE Grade 5
    		10000000000000
     
    Steel
    1/4"-20
    		1/2"15/64"SAE Grade 5
    		1000000000000000
    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
     
    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.
    Zinc-Yellow-Chromate-Plated Steel—With a more durable finish than clear zinc plating, these nuts are suitable for most wet and outdoor environments. However, they won't hold up to the harsh chemicals that stainless steel can.
    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.
    PTFE-Coated Steel—A slippery PTFE coating prevents these nuts from becoming stuck during installation. They resist rust in wet and outdoor environments, however they're not recommended for prolonged exposure since the coating can wear off.
    Thread Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Zinc-Yellow-Chromate-Plated Steel
    1/4"-20
    		1/2"15/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194100000000000000000
    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
    		ASME B18.2.2, ASTM A194500000000000000
    5/16"-24
    		9/16"19/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194250000000000000
    3/8"-24
    		11/16"23/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1942500000000000000
    1/2"-13
    		7/8"31/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1942500000000000000
    1/2"-20
    		7/8"31/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194100000000000000
    5/8"-18
    		1 1/16"39/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1941000000000000000
    3/4"-16
    		1 1/4"47/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1941000000000000000
    1"-8
    		1 5/8"63/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194500000000000000
    1"-14
    		1 5/8"63/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A19410000000000000
     
    Black-Oxide Steel
    1/4"-20
    		1/2"15/64"ASTM Grade 2H
    		ASTM A194
    		2500000000000000
    5/16"-18
    		9/16"19/64"ASTM Grade 2H
    		ASTM A194
    		100000000000000
    3/8"-16
    		11/16"23/64"ASTM Grade 2H
    		ASTM A194
    		100000000000000
    7/16"-14
    		3/4"27/64"ASTM Grade 2H
    		ASTM A194
    		100000000000000
    1/2"-13
    		7/8"31/64"ASTM Grade 2H
    		ASTM A194
    		100000000000000
    5/8"-11
    		1 1/16"39/64"ASTM Grade 2H
    		ASTM A194
    		50000000000000
    3/4"-10
    		1 1/4"47/64"ASTM Grade 2H
    		ASTM A194
    		50000000000000
    7/8"-9
    		1 7/16"55/64"ASTM Grade 2H
    		ASTM A194
    		10000000000000
    1"-8
    		1 5/8"63/64"ASTM Grade 2H
    		ASTM A194
    		10000000000000
     
    Hot-Dipped Galvanized Steel
    1/4"-20
    		1/2"15/64"ASTM Grade 2H
    		ASTM A194
    		5000000000000000
    3/8"-16
    		11/16"23/64"ASTM Grade 2H
    		ASTM A194
    		5000000000000000
    1/2"-13
    		7/8"31/64"ASTM Grade 2H
    		ASTM A194
    		2500000000000000
    5/8"-11
    		1 1/16"39/64"ASTM Grade 2H
    		ASTM A194
    		1000000000000000
    3/4"-10
    		1 1/4"47/64"ASTM Grade 2H
    		ASTM A194
    		1000000000000000
    7/8"-9
    		1 7/16"55/64"ASTM Grade 2H
    		ASTM A194
    		500000000000000
    1"-8
    		1 5/8"63/64"ASTM Grade 2H
    		ASTM A194
    		500000000000000
    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 1/4"-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 3/8"-6
    		2 3/16"1 11/32"ASTM Grade 2H
    		ASTM A194
    		10000000000000
    1 1/2"-6
    		2 3/8"1 15/32"ASTM Grade 2H
    		ASTM A194
    		100000000000000
    1 3/4"-5
    		2 3/4"1 23/32"ASTM Grade 2H
    		ASTM A194
    		100000000000000
    2"-4 1/2
    		3 1/8"1 31/32"ASTM Grade 2H
    		ASTM A194
    		100000000000000
     
    Steel
    1/4"-20
    		1/2"15/64"ASTM Grade 2H
    		ASTM A194
    		10000000000000000
    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
     
    Blue PTFE-Coated Steel
    1/2"-13
    		7/8"31/64"ASTM Grade 2H
    		ASTM A194
    		2500000000000000
    5/8"-11
    		1 1/16"39/64"ASTM Grade 2H
    		ASTM A194
    		1000000000000000
    3/4"-10
    		1 1/4"47/64"ASTM Grade 2H
    		ASTM A194
    		1000000000000000
    7/8"-9
    		1 7/16"55/64"ASTM Grade 2H
    		ASTM A194
    		500000000000000
    1"-8
    		1 5/8"63/64"ASTM Grade 2H
    		ASTM A194
    		500000000000000
    1 1/8"-8
    		1 13/16"1 7/64"ASTM Grade 2H
    		ASTM A194
    		10000000000000
    1 1/4"-8
    		2"1 7/32"ASTM Grade 2H
    		ASTM A194
    		100000000000000
    1 3/8"-8
    		2 3/16"1 11/32"ASTM Grade 2H
    		ASTM A194
    		100000000000000
    1 1/2"-8
    		2 3/8"1 15/32"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
    		ASTM A194
    		100000000000000
    2"-8
    		3 1/8"1 31/32"ASTM 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.
    Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
    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.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Thread
    Size
    Wd.
    Ht.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated 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 B18.2.22500000000000000
    5/8"-11
    		1 1/16"39/64"ASME B18.2.22500000000000000
    3/4"-10
    		1 1/4"47/64"ASME B18.2.21000000000000000
    7/8"-9
    		1 7/16"55/64"ASME B18.2.21000000000000000
    1"-8
    		1 5/8"63/64"ASME B18.2.2500000000000000
    1 1/8"-8
    		1 13/16"1 7/64"ASME B18.2.2, SAE J995100000000000000
    1 1/4"-7
    		2"1 7/32"ASME B18.2.2, SAE J99510000000000000
    1 1/2"-6
    		2 3/8"1 15/32"ASME B18.2.210000000000000
    1 7/8"-8
    		2 15/16"1 27/32"ASME B18.2.2, SAE J995100000000000000
    2"-4 1/2
    		3 1/8"1 31/32"ASME B18.2.2100000000000000
     
    Black-Oxide Steel
    1/4"-20
    		1/2"15/64"—5000000000000000
    5/16"-18
    		9/16"19/64"—5000000000000000
    3/8"-16
    		11/16"23/64"—2500000000000000
    1/2"-13
    		7/8"31/64"—1000000000000000
     
    Steel
    1/4"-20
    		1/2"15/64"ASME B18.2.21000000000000000
    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
     
    Corrosion-Resistant Nickel
    Image of Product. Front orientation. Hex Nuts. Heavy-Profile Hex Nuts.
    400 Nickel—Also known as Monel, 400 nickel is an economical alternative to titanium. These nuts are just as corrosion resistant to stand up to salt water and strong acids. However, they are not as strong as C276 nickel nuts.
    Thread
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    400 Nickel
    1/2"-13
    		7/8"31/64"1000000000000000
    5/8"-11
    		1 1/16"39/64"100000000000000
    3/4"-10
    		1 1/4"47/64"100000000000000
     
    Bronze
    Image of Product. Front orientation. Hex Nuts. Heavy-Profile Hex Nuts.
    Silicon Bronze—More resistant to salt water than brass, these nuts are a good choice for marine environments. They are also stronger than brass and more resistant to abrasion and wear. Choose them for machinery with rotating parts or other applications where nearby components may rub against the nut.
    Thread
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    Silicon Bronze
    1/4"-20
    		1/2"15/64"1000000000000000
    5/16"-18
    		9/16"19/64"1000000000000000
    3/8"-16
    		11/16"23/64"50000000000000
    1/2"-13
    		7/8"31/64"10000000000000
    5/8"-11
    		1 1/16"39/64"100000000000000
    3/4"-10
    		1 1/4"47/64"100000000000000
     
    Low-Strength Steel with Material Certificate
    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.
    Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
    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.
    Zinc-Plated Steel
    1 1/8"-7
    		1 13/16"1 7/64"ASME B18.2.25000000000000000
     
    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.
    Zinc-Yellow-Chromate-Plated Steel—With a more durable finish than clear zinc plating, these nuts are suitable for most wet and outdoor environments. However, they won't hold up to the harsh chemicals that stainless steel can.
    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.
    Zinc-Yellow-Chromate-Plated Steel
    3/8"-16
    		11/16"23/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A19450000000000000000
    5/8"-11
    		1 1/16"39/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1941000000000000000
    3/4"-10
    		1 1/4"47/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1941000000000000000
     
    Steel
    7/8"-9
    		1 7/16"55/64"ASTM Grade 2H
    		ASTM A194
    		1000000000000000
     

    Thin-Profile Hex Nuts

    Image of Product. Front orientation. Hex Nuts. 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.
    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
    5/8"-24
    		15/16"3/8"1000000000000000
     
    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.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    7/8"-20
    		1 5/16"31/64"1000000000000000
     

    Mil. Spec. Hex Nuts

    Image of Product. Front orientation. Hex Nuts. Mil. Spec. Hex Nuts.
    These nuts are manufactured and tested to strict U.S. military standards for material and construction.
    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.
    Mil. Spec.
    Fastener Strength
    Grade/Class
    Pkg.
    Qty.
    Pkg.
    Steel
    2"-4 1/2
    		3"1 23/32"MIL-DTL-1222SAE Grade 2
    		1000000000000000
     

    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.
    Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
    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.
    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.
    Zinc-Plated Steel
    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
    		10000000000000
    5/8"-11
    		1 1/16"39/64"ASTM Grade 7
    		ASTM A194
    		10000000000000
    3/4"-10
    		1 1/4"47/64"ASTM Grade 7
    		ASTM A194
    		10000000000000
    7/8"-9
    		1 7/16"55/64"ASTM Grade 7
    		ASTM A194
    		10000000000000
    1"-8
    		1 5/8"63/64"ASTM Grade 7
    		ASTM A194
    		10000000000000
    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
     
    Black-Oxide Steel
    1/2"-13
    		7/8"31/64"ASTM Grade 7
    		ASTM A194
    		10000000000000
    5/8"-11
    		1 1/16"39/64"ASTM Grade 7
    		ASTM A194
    		10000000000000
    3/4"-10
    		1 1/4"47/64"ASTM Grade 7
    		ASTM A194
    		10000000000000
     
    Steel
    1/4"-20
    		1/2"15/64"ASTM Grade 7
    		ASTM A194
    		100000000000000
    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 1/4"-7
    		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.
    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
     
    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.
    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 1/8"-8
    		1 13/16"1 7/64"ASTM Grade 8
    		ASTM A194
    		10000000000000
    1 1/4"-7
    		2"1 7/32"ASTM Grade 8
    		ASTM A194
    		100000000000000
     

    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
     
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