McMaster-Carr logo
    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)
    717 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.
    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 B18.2.210095462A02900000
    1/4"-28
    		7/16"7/32"SAE Grade 5
    		ASME B18.2.210095462A5050000
    5/16"-18
    		1/2"17/64"SAE Grade 5
    		ASME B18.2.210095462A03000000
    5/16"-24
    		1/2"17/64"SAE Grade 5
    		ASME B18.2.210095462A51000000
    3/8"-16
    		9/16"21/64"SAE Grade 5
    		ASME B18.2.210095462A03100000
    3/8"-24
    		9/16"21/64"SAE Grade 5
    		ASME B18.2.210095462A51500000
    7/16"-14
    		11/16"3/8"SAE Grade 5
    		ASME B18.2.210095462A03200000
    7/16"-20
    		11/16"3/8"SAE Grade 5
    		ASME B18.2.210095462A52000000
    1/2"-13
    		3/4"7/16"SAE Grade 5
    		ASME B18.2.210095462A03300000
    1/2"-20
    		3/4"7/16"SAE Grade 5
    		ASME B18.2.210095462A52500000
    9/16"-12
    		7/8"31/64"SAE Grade 5
    		ASME B18.2.25095462A52800000
    9/16"-18
    		7/8"31/64"SAE Grade 5
    		ASME B18.2.22595462A53000000
    5/8"-11
    		15/16"35/64"SAE Grade 5
    		ASME B18.2.22595462A53300000
    5/8"-18
    		15/16"35/64"SAE Grade 5
    		ASME B18.2.22595462A53500000
    3/4"-10
    		1 1/8"41/64"SAE Grade 5
    		ASME B18.2.22595462A53800000
    3/4"-16
    		1 1/8"41/64"SAE Grade 5
    		ASME B18.2.22595462A54000000
    7/8"-9
    		1 5/16"3/4"SAE Grade 5
    		ASME B18.2.21095462A54200000
    7/8"-14
    		1 5/16"3/4"SAE Grade 5
    		ASME B18.2.21095462A54500000
    1"-8
    		1 1/2"55/64"SAE Grade 5
    		ASME B18.2.21095462A54800000
    1"-12
    		1 1/2"55/64"SAE Grade 5
    		ASME B18.2.2195462A5500000
    1"-14
    		1 1/2"55/64"SAE Grade 5
    		ASME B18.2.21095462A55500000
    1 1/8"-7
    		1 11/16"31/32"SAE Grade 5
    		ASME B18.2.21095462A55700000
    1 1/8"-12
    		1 11/16"31/32"SAE Grade 5
    		ASME B18.2.21095462A55800000
    1 1/4"-7
    		1 7/8"1 1/16"SAE Grade 5
    		ASME B18.2.2595462A55900000
    1 1/4"-12
    		1 7/8"1 1/16"SAE Grade 5
    		ASME B18.2.2595462A56000000
    1 3/8"-6
    		2 1/16"1 11/64"SAE Grade 5
    		ASME B18.2.2195462A5620000
    1 3/8"-12
    		2 1/16"1 11/64"SAE Grade 5
    		ASME B18.2.2195462A5630000
    1 1/2"-6
    		2 1/4"1 9/32"SAE Grade 5
    		ASME B18.2.2195462A5640000
    1 1/2"-12
    		2 1/4"1 9/32"SAE Grade 5
    		ASME B18.2.2195462A5650000
    2"-4 1/2
    		3"1 23/32"SAE Grade 5
    		ASME B18.2.2195462A21100000
    2"-12
    		3"1 23/32"SAE Grade 5
    		ASME B18.2.2195462A21300000
     
    Black-Oxide Steel
    1/4"-20
    		7/16"7/32"SAE Grade 5
    		ASME B18.2.25095479A1110000
    1/4"-28
    		7/16"7/32"SAE Grade 5
    		ASME B18.2.25095479A11300000
    5/16"-18
    		1/2"17/64"SAE Grade 5
    		ASME B18.2.25095479A1150000
    5/16"-24
    		1/2"17/64"SAE Grade 5
    		ASME B18.2.25095479A11700000
    3/8"-16
    		9/16"21/64"SAE Grade 5
    		ASME B18.2.25095479A11800000
    3/8"-24
    		9/16"21/64"SAE Grade 5
    		ASME B18.2.22595479A11900000
    7/16"-14
    		11/16"3/8"SAE Grade 5
    		ASME B18.2.22595479A21100000
    7/16"-20
    		11/16"3/8"SAE Grade 5
    		ASME B18.2.22595479A2150000
    1/2"-13
    		3/4"7/16"SAE Grade 5
    		ASME B18.2.22595479A12100000
    1/2"-20
    		3/4"7/16"SAE Grade 5
    		ASME B18.2.21095479A1220000
    9/16"-12
    		7/8"31/64"SAE Grade 5
    		ASME B18.2.21095479A1230000
    9/16"-18
    		7/8"1/2"SAE Grade 5
    		ASME B18.2.22595479A1080000
    5/8"-11
    		15/16"35/64"SAE Grade 5
    		ASME B18.2.21095479A1250000
    5/8"-18
    		15/16"35/64"SAE Grade 5
    		ASME B18.2.21095479A1270000
    3/4"-10
    		1 1/8"41/64"SAE Grade 5
    		ASME B18.2.21095479A12800000
    3/4"-16
    		1 1/8"41/64"SAE Grade 5
    		ASME B18.2.21095479A12900000
    7/8"-9
    		1 5/16"3/4"SAE Grade 5
    		ASME B18.2.2595479A1310000
    7/8"-14
    		1 5/16"3/4"SAE Grade 5
    		ASME B18.2.2595479A1320000
    1"-8
    		1 1/2"55/64"SAE Grade 5
    		ASME B18.2.2595479A1350000
    1"-14
    		1 1/2"7/8"SAE Grade 5
    		ASME B18.2.21095479A17700000
    1 1/8"-7
    		1 11/16"31/32"SAE Grade 5
    		ASME B18.2.2195479A1400000
    1 1/8"-12
    		1 11/16"1"SAE Grade 5
    		ASME B18.2.21095479A18400000
    1 1/4"-7
    		1 7/8"1 1/16"SAE Grade 5
    		ASME B18.2.2195479A1450000
    1 1/4"-12
    		1 7/8"1 1/16"SAE Grade 5
    		ASME B18.2.2595479A20500000
    1 3/8"-6
    		2 1/16"1 3/16"SAE Grade 5
    		ASME B18.2.2195479A2220000
    1 3/8"-12
    		2 1/16"1 3/16"SAE Grade 5
    		ASME B18.2.2195479A33500000
    1 1/2"-6
    		2 1/4"1 5/16"SAE Grade 5
    		ASME B18.2.2195479A44900000
    1 1/2"-12
    		2 1/4"1 5/16"SAE Grade 5
    		ASME B18.2.2195479A90900000
     
    Black Corrosion-Resistant-Coated Steel
    1/4"-20
    		7/16"7/32"SAE Grade 5
    		ASME B18.2.21098797A0290000
    5/16"-18
    		1/2"17/64"SAE Grade 5
    		ASME B18.2.21098797A03000000
    3/8"-16
    		9/16"21/64"SAE Grade 5
    		ASME B18.2.2598797A0310000
    7/16"-14
    		11/16"3/8"SAE Grade 5
    		ASME B18.2.2598797A3300000
    1/2"-13
    		3/4"7/16"SAE Grade 5
    		ASME B18.2.2598797A5230000
    9/16"-12
    		7/8"31/64"SAE Grade 5
    		ASME B18.2.2598797A39500000
    5/8"-11
    		15/16"35/64"SAE Grade 5
    		ASME B18.2.2198797A5350000
    3/4"-10
    		1 1/8"41/64"SAE Grade 5
    		ASME B18.2.2198797A8550000
     
    Steel
    1/4"-20
    		7/16"7/32"SAE Grade 5
    		ASME B18.2.210095505A6010000
    1/4"-28
    		7/16"7/32"SAE Grade 5
    		ASME B18.2.210095505A6110000
    5/16"-18
    		1/2"17/64"SAE Grade 5
    		ASME B18.2.210095505A6020000
    5/16"-24
    		1/2"17/64"SAE Grade 5
    		ASME B18.2.210095505A6120000
    3/8"-16
    		9/16"21/64"SAE Grade 5
    		ASME B18.2.210095505A60300000
    3/8"-24
    		9/16"21/64"SAE Grade 5
    		ASME B18.2.210095505A6130000
    7/16"-14
    		11/16"3/8"SAE Grade 5
    		ASME B18.2.210095505A60400000
    7/16"-20
    		11/16"3/8"SAE Grade 5
    		ASME B18.2.210095505A61400000
    1/2"-13
    		3/4"7/16"SAE Grade 5
    		ASME B18.2.25095505A60500000
    1/2"-20
    		3/4"7/16"SAE Grade 5
    		ASME B18.2.25095505A61500000
    9/16"-12
    		7/8"31/64"SAE Grade 5
    		ASME B18.2.22595505A60600000
    9/16"-18
    		7/8"31/64"SAE Grade 5
    		ASME B18.2.22595505A6160000
    5/8"-11
    		15/16"35/64"SAE Grade 5
    		ASME B18.2.22595505A60700000
    5/8"-18
    		15/16"35/64"SAE Grade 5
    		ASME B18.2.22595505A61700000
    3/4"-10
    		1 1/8"41/64"SAE Grade 5
    		ASME B18.2.22595505A60800000
    3/4"-16
    		1 1/8"41/64"SAE Grade 5
    		ASME B18.2.22595505A61800000
    7/8"-9
    		1 5/16"3/4"SAE Grade 5
    		ASME B18.2.21095505A60900000
    7/8"-14
    		1 5/16"3/4"SAE Grade 5
    		ASME B18.2.21095505A61900000
    1"-8
    		1 1/2"55/64"SAE Grade 5
    		ASME B18.2.2595505A6100000
    1"-12
    		1 1/2"55/64"SAE Grade 5
    		ASME B18.2.2195505A6200000
    1"-14
    		1 1/2"55/64"SAE Grade 5
    		ASME B18.2.2595505A6210000
    1 1/8"-7
    		1 11/16"31/32"SAE Grade 5
    		ASME B18.2.2595505A62200000
    1 1/8"-12
    		1 11/16"31/32"SAE Grade 5
    		ASME B18.2.2595505A62600000
    1 1/4"-7
    		1 7/8"1 1/16"SAE Grade 5
    		ASME B18.2.2595505A6230000
    1 1/4"-12
    		1 7/8"1 1/16"SAE Grade 5
    		ASME B18.2.2595505A62700000
    1 3/8"-6
    		2 1/16"1 11/64"SAE Grade 5
    		ASME B18.2.2195505A6240000
    1 3/8"-12
    		2 1/16"1 11/64"SAE Grade 5
    		ASME B18.2.2195505A6280000
    1 1/2"-6
    		2 1/4"1 9/32"SAE Grade 5
    		ASME B18.2.2195505A6250000
    1 1/2"-12
    		2 1/4"1 9/32"SAE Grade 5
    		ASME B18.2.2195505A6290000
    1 3/4"-5
    		2 5/8"1 1/2"SAE Grade 5
    		ASME B18.2.2195505A64200000
    1 3/4"-12
    		2 5/8"1 1/2"SAE Grade 5
    		ASME B18.2.2195505A63000000
    2"-4 1/2
    		3"1 23/32"SAE Grade 5
    		ASME B18.2.2195505A66100000
    2"-12
    		3"1 23/32"SAE Grade 5
    		ASME B18.2.2195505A63100000
     
    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.
    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
    Pkg.
    Qty.
    Pkg.
    Zinc-Yellow-Chromate-Plated Steel
    1/4"-20
    		7/16"7/32"SAE Grade 8
    		10094895A02900000
    1/4"-28
    		7/16"7/32"SAE Grade 8
    		10094895A8050000
    5/16"-18
    		1/2"17/64"SAE Grade 8
    		10094895A03000000
    5/16"-24
    		1/2"17/64"SAE Grade 8
    		10094895A8100000
    3/8"-16
    		9/16"21/64"SAE Grade 8
    		10094895A03100000
    3/8"-24
    		9/16"21/64"SAE Grade 8
    		10094895A81500000
    7/16"-14
    		11/16"3/8"SAE Grade 8
    		5094895A81700000
    7/16"-20
    		11/16"3/8"SAE Grade 8
    		5094895A8200000
    1/2"-13
    		3/4"7/16"SAE Grade 8
    		5094895A82300000
    1/2"-20
    		3/4"7/16"SAE Grade 8
    		5094895A82500000
    9/16"-12
    		7/8"31/64"SAE Grade 8
    		2594895A82700000
    9/16"-18
    		7/8"31/64"SAE Grade 8
    		2594895A83000000
    5/8"-11
    		15/16"35/64"SAE Grade 8
    		2594895A03500000
    5/8"-18
    		15/16"35/64"SAE Grade 8
    		2594895A83500000
    3/4"-10
    		1 1/8"41/64"SAE Grade 8
    		2094895A03600000
    3/4"-16
    		1 1/8"41/64"SAE Grade 8
    		1094895A84000000
    7/8"-9
    		1 5/16"3/4"SAE Grade 8
    		1094895A84200000
    7/8"-14
    		1 5/16"3/4"SAE Grade 8
    		1094895A84500000
    1"-8
    		1 1/2"55/64"SAE Grade 8
    		1094895A03800000
    1"-12
    		1 1/2"55/64"SAE Grade 8
    		194895A8500000
    1"-14
    		1 1/2"55/64"SAE Grade 8
    		1094895A85500000
    1 1/8"-7
    		1 11/16"31/32"SAE Grade 8
    		594895A85700000
    1 1/8"-12
    		1 11/16"31/32"SAE Grade 8
    		594895A85800000
    1 1/4"-7
    		1 7/8"1 1/16"SAE Grade 8
    		594895A85900000
    1 1/4"-12
    		1 7/8"1 1/16"SAE Grade 8
    		194895A8600000
    1 3/8"-6
    		2 1/16"1 11/64"SAE Grade 8
    		194895A0420000
    1 3/8"-12
    		2 1/16"1 11/64"SAE Grade 8
    		194895A8630000
    1 1/2"-6
    		2 1/4"1 9/32"SAE Grade 8
    		194895A0410000
    1 1/2"-12
    		2 1/4"1 9/32"SAE Grade 8
    		194895A8650000
    1 3/4"-5
    		2 5/8"1 1/2"SAE Grade 8
    		194895A04400000
    1 3/4"-12
    		2 5/8"1 1/2"SAE Grade 8
    		194895A86800000
    2"-4 1/2
    		3"1 23/32"SAE Grade 8
    		194895A04500000
    2"-12
    		3"1 23/32"SAE Grade 8
    		194895A87000000
     
    Black-Oxide Steel
    1/4"-20
    		7/16"7/32"SAE Grade 8
    		10094895A1100000
    1/4"-28
    		7/16"7/32"SAE Grade 8
    		10094895A1120000
    5/16"-18
    		1/2"17/64"SAE Grade 8
    		10094895A1150000
    5/16"-24
    		1/2"17/64"SAE Grade 8
    		10094895A1160000
    3/8"-16
    		9/16"21/64"SAE Grade 8
    		10094895A11900000
    3/8"-24
    		9/16"21/64"SAE Grade 8
    		10094895A14500000
    7/16"-14
    		11/16"3/8"SAE Grade 8
    		5094895A15600000
    7/16"-20
    		11/16"3/8"SAE Grade 8
    		5094895A19000000
    1/2"-13
    		3/4"7/16"SAE Grade 8
    		5094895A20000000
    1/2"-20
    		3/4"7/16"SAE Grade 8
    		5094895A29100000
    9/16"-12
    		7/8"31/64"SAE Grade 8
    		2594895A36600000
    9/16"-18
    		7/8"31/64"SAE Grade 8
    		2594895A37400000
    5/8"-11
    		15/16"35/64"SAE Grade 8
    		2594895A40300000
    5/8"-18
    		15/16"35/64"SAE Grade 8
    		2594895A41500000
    3/4"-10
    		1 1/8"41/64"SAE Grade 8
    		2094895A42600000
    3/4"-16
    		1 1/8"41/64"SAE Grade 8
    		2094895A49100000
    7/8"-9
    		1 5/16"3/4"SAE Grade 8
    		1094895A53500000
    7/8"-14
    		1 5/16"3/4"SAE Grade 8
    		1094895A54100000
    1"-8
    		1 1/2"55/64"SAE Grade 8
    		1094895A54900000
    1"-14
    		1 1/2"55/64"SAE Grade 8
    		1094895A55000000
    1 1/8"-7
    		1 11/16"31/32"SAE Grade 8
    		594895A56500000
    1 1/8"-12
    		1 11/16"31/32"SAE Grade 8
    		594895A58400000
    1 1/4"-7
    		1 7/8"1 1/16"SAE Grade 8
    		594895A58600000
    1 1/4"-12
    		1 7/8"1 1/16"SAE Grade 8
    		594895A59100000
    1 3/8"-6
    		2 1/16"1 11/64"SAE Grade 8
    		194895A6280000
    1 3/8"-12
    		2 1/16"1 11/64"SAE Grade 8
    		194895A7060000
    1 1/2"-6
    		2 1/4"1 9/32"SAE Grade 8
    		194895A71300000
    1 1/2"-12
    		2 1/4"1 9/32"SAE Grade 8
    		194895A73000000
    1 3/4"-5
    		2 5/8"1 1/2"SAE Grade 8
    		194895A76400000
    1 3/4"-12
    		2 5/8"1 1/2"SAE Grade 8
    		194895A79200000
    2"-4 1/2
    		3"1 23/32"SAE Grade 8
    		194895A80200000
    2"-12
    		3"1 23/32"SAE Grade 8
    		194895A98200000
     
    Zinc-Flake-Coated Steel
    1/4"-20
    		7/16"7/32"SAE Grade 8
    		10093827A21100000
    1/4"-28
    		7/16"7/32"SAE Grade 8
    		10093827A2160000
    5/16"-18
    		1/2"17/64"SAE Grade 8
    		10093827A21900000
    5/16"-24
    		1/2"17/64"SAE Grade 8
    		10093827A2220000
    3/8"-16
    		9/16"21/64"SAE Grade 8
    		10093827A22500000
    3/8"-24
    		9/16"21/64"SAE Grade 8
    		5093827A22800000
    7/16"-14
    		11/16"3/8"SAE Grade 8
    		5093827A23600000
    7/16"-20
    		11/16"3/8"SAE Grade 8
    		2593827A2410000
    1/2"-13
    		3/4"7/16"SAE Grade 8
    		2593827A24500000
    1/2"-20
    		3/4"7/16"SAE Grade 8
    		2593827A24900000
    9/16"-12
    		7/8"31/64"SAE Grade 8
    		2593827A25000000
    9/16"-18
    		7/8"31/64"SAE Grade 8
    		1093827A2510000
    5/8"-11
    		15/16"35/64"SAE Grade 8
    		1093827A25300000
    5/8"-18
    		15/16"35/64"SAE Grade 8
    		1093827A2550000
    3/4"-10
    		1 1/8"41/64"SAE Grade 8
    		1093827A25900000
    3/4"-16
    		1 1/8"41/64"SAE Grade 8
    		1093827A26700000
    7/8"-9
    		1 5/16"3/4"SAE Grade 8
    		1093827A27100000
    7/8"-14
    		1 5/16"3/4"SAE Grade 8
    		1093827A27300000
    1"-8
    		1 1/2"55/64"SAE Grade 8
    		593827A27700000
    1"-14
    		1 1/2"55/64"SAE Grade 8
    		593827A27900000
    1 1/8"-7
    		1 11/16"31/32"SAE Grade 8
    		193827A2820000
    1 1/8"-12
    		1 11/16"31/32"SAE Grade 8
    		193827A2840000
    1 1/4"-7
    		1 7/8"1 1/16"SAE Grade 8
    		193827A2870000
    1 1/4"-12
    		1 7/8"1 1/16"SAE Grade 8
    		193827A2890000
    1 3/8"-6
    		2 1/16"1 11/64"SAE Grade 8
    		193827A2920000
    1 3/8"-12
    		2 1/16"1 11/64"SAE Grade 8
    		193827A2950000
    1 1/2"-6
    		2 1/4"1 9/32"SAE Grade 8
    		193827A2970000
    1 1/2"-12
    		2 1/4"1 9/32"SAE Grade 8
    		193827A2990000
    2"-4 1/2
    		3"1 23/32"SAE Grade 8
    		193827A30100000
    2"-12
    		3"1 23/32"SAE Grade 8
    		193827A30300000
     
    Steel
    1/4"-20
    		7/16"7/32"SAE Grade 8
    		10090499A0290000
    1/4"-28
    		7/16"7/32"SAE Grade 8
    		10090499A8050000
    5/16"-18
    		1/2"17/64"SAE Grade 8
    		10090499A0300000
    5/16"-24
    		1/2"17/64"SAE Grade 8
    		10090499A8100000
    3/8"-16
    		9/16"21/64"SAE Grade 8
    		10090499A03100000
    3/8"-24
    		9/16"21/64"SAE Grade 8
    		10090499A81500000
    7/16"-14
    		11/16"3/8"SAE Grade 8
    		10090499A03200000
    7/16"-20
    		11/16"3/8"SAE Grade 8
    		10090499A82000000
    1/2"-13
    		3/4"7/16"SAE Grade 8
    		5090499A03300000
    1/2"-20
    		3/4"7/16"SAE Grade 8
    		5090499A82500000
    9/16"-12
    		7/8"31/64"SAE Grade 8
    		5090499A82700000
    9/16"-18
    		7/8"31/64"SAE Grade 8
    		5090499A83000000
    5/8"-11
    		15/16"35/64"SAE Grade 8
    		5090499A83200000
    5/8"-18
    		15/16"35/64"SAE Grade 8
    		2590499A83500000
    3/4"-10
    		1 1/8"41/64"SAE Grade 8
    		2590499A83700000
    3/4"-16
    		1 1/8"41/64"SAE Grade 8
    		1090499A8400000
    7/8"-9
    		1 5/16"3/4"SAE Grade 8
    		1090499A84200000
    7/8"-14
    		1 5/16"3/4"SAE Grade 8
    		1090499A84500000
    1"-12
    		1 1/2"55/64"SAE Grade 8
    		190499A8500000
    1"-14
    		1 1/2"55/64"SAE Grade 8
    		1090499A85500000
    1 1/8"-7
    		1 11/16"31/32"SAE Grade 8
    		590499A85700000
    1 1/8"-12
    		1 11/16"31/32"SAE Grade 8
    		590499A85800000
    1 1/4"-7
    		1 7/8"1 1/16"SAE Grade 8
    		590499A85900000
    1 1/4"-12
    		1 7/8"1 1/16"SAE Grade 8
    		590499A86000000
    1 3/8"-6
    		2 1/16"1 11/64"SAE Grade 8
    		190499A0420000
    1 3/8"-12
    		2 1/16"1 11/64"SAE Grade 8
    		190499A8630000
    1 1/2"-6
    		2 1/4"1 9/32"SAE Grade 8
    		190499A0410000
    1 1/2"-12
    		2 1/4"1 9/32"SAE Grade 8
    		190499A8650000
    1 3/4"-5
    		2 5/8"1 1/2"SAE Grade 8
    		190499A04400000
    1 3/4"-12
    		2 5/8"1 1/2"SAE Grade 8
    		190499A86800000
    2"-4 1/2
    		3"1 23/32"SAE Grade 8
    		190499A04500000
    2"-12
    		3"1 23/32"SAE Grade 8
    		190499A87000000
     
    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 J99510091819A11000000
    5/16"-18
    		1/2"17/64"SAE Grade 8
    		ASME B1.1, ASME B18.2.2, SAE J99510091819A12000000
    3/8"-16
    		9/16"21/64"SAE Grade 8
    		ASME B1.1, ASME B18.2.2, SAE J99510091819A13000000
    1/2"-13
    		3/4"7/16"SAE Grade 8
    		ASME B1.1, ASME B18.2.2, SAE J9955091819A14000000
    5/8"-11
    		15/16"35/64"SAE Grade 8
    		ASME B1.1, ASME B18.2.2, SAE J9952591819A15000000
    3/4"-10
    		1 1/8"41/64"SAE Grade 8
    		ASME B1.1, ASME B18.2.2, SAE J9951091819A16000000
    1"-8
    		1 1/2"55/64"SAE Grade 8
    		ASME B1.1, ASME B18.2.2, SAE J995591819A17000000
     
    Steel
    1"-8
    		1 1/2"55/64"SAE Grade 8
    		—1090499A84700000
     
    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 B18.2.210090473A02900000
    1/4"-28
    		7/16"7/32"SAE Grade 2
    		ASME B18.2.210090473A2050000
    5/16"-18
    		1/2"17/64"SAE Grade 2
    		ASME B18.2.210090473A0300000
    5/16"-24
    		1/2"17/64"SAE Grade 2
    		ASME B18.2.210090473A2100000
    3/8"-16
    		9/16"21/64"SAE Grade 2
    		ASME B18.2.210090473A0310000
    3/8"-24
    		9/16"21/64"SAE Grade 2
    		ASME B18.2.210090473A2150000
    7/16"-14
    		11/16"3/8"SAE Grade 2
    		ASME B18.2.210090473A21700000
    7/16"-20
    		11/16"3/8"SAE Grade 2
    		ASME B18.2.210090473A22000000
    1/2"-13
    		3/4"7/16"SAE Grade 2
    		ASME B18.2.210090473A22300000
    1/2"-20
    		3/4"7/16"SAE Grade 2
    		ASME B18.2.25090473A22500000
    9/16"-12
    		7/8"31/64"SAE Grade 2
    		ASME B18.2.25090473A22700000
    9/16"-18
    		7/8"31/64"SAE Grade 2
    		ASME B18.2.25090473A23000000
    5/8"-11
    		15/16"35/64"SAE Grade 2
    		ASME B18.2.25090473A23300000
    5/8"-18
    		15/16"35/64"SAE Grade 2
    		ASME B18.2.22590473A23500000
    3/4"-10
    		1 1/8"41/64"SAE Grade 2
    		ASME B18.2.22590473A23700000
    3/4"-16
    		1 1/8"41/64"SAE Grade 2
    		ASME B18.2.22590473A24000000
    7/8"-9
    		1 5/16"3/4"SAE Grade 2
    		ASME B18.2.21090473A24200000
    7/8"-14
    		1 5/16"3/4"SAE Grade 2
    		ASME B18.2.21090473A24500000
    1"-8
    		1 1/2"55/64"SAE Grade 2
    		ASME B18.2.2590473A03800000
    1"-12
    		1 1/2"55/64"SAE Grade 2
    		ASME B18.2.2590473A25000000
    1"-14
    		1 1/2"55/64"SAE Grade 2
    		ASME B18.2.21090473A25500000
    1 1/8"-7
    		1 11/16"31/32"SAE Grade 2
    		ASME B18.2.21090473A03900000
    1 1/8"-12
    		1 11/16"31/32"SAE Grade 2
    		ASME B18.2.2590473A2580000
    1 1/4"-7
    		1 7/8"1 1/16"SAE Grade 2
    		ASME B18.2.2590473A0400000
    1 1/4"-12
    		1 7/8"1 1/16"SAE Grade 2
    		ASME B18.2.2590473A26000000
    1 3/8"-6
    		2 1/16"1 11/64"SAE Grade 2
    		ASME B18.2.2190473A0420000
    1 3/8"-12
    		2 1/16"1 11/64"SAE Grade 2
    		ASME B18.2.2190473A2630000
    1 1/2"-6
    		2 1/4"1 9/32"SAE Grade 2
    		ASME B18.2.2190473A0410000
    1 1/2"-12
    		2 1/4"1 9/32"SAE Grade 2
    		ASME B18.2.2190473A2650000
     
    Hot-Dipped Galvanized Steel
    1/4"-20
    		7/16"7/32"SAE Grade 2
    		ASME B18.2.210090371A0290000
    5/16"-18
    		1/2"17/64"SAE Grade 2
    		ASME B18.2.210090371A0190000
    3/8"-16
    		9/16"21/64"SAE Grade 2
    		ASME B18.2.210090371A0310000
    7/16"-14
    		11/16"3/8"SAE Grade 2
    		ASME B18.2.25090371A0320000
    1/2"-13
    		3/4"7/16"SAE Grade 2
    		ASME B18.2.25090371A04500000
    5/8"-11
    		15/16"35/64"SAE Grade 2
    		ASME B18.2.22590371A05000000
    3/4"-10
    		1 1/8"41/64"SAE Grade 2
    		ASME B18.2.21090371A0550000
    7/8"-9
    		1 5/16"3/4"SAE Grade 2
    		ASME B18.2.21090371A06000000
    1"-8
    		1 1/2"55/64"SAE Grade 2
    		ASME B18.2.2590371A0650000
    1 1/8"-7
    		1 11/16"31/32"SAE Grade 2
    		ASME B18.2.2190371A0670000
    1 1/4"-7
    		1 7/8"1 1/16"SAE Grade 2
    		ASME B18.2.2190371A0700000
    1 1/2"-6
    		2 1/4"1 9/32"SAE Grade 2
    		ASME B18.2.2190371A0730000
     
    Steel
    1/4"-20
    		7/16"7/32"SAE Grade 2
    		ASME B18.2.210090490A0290000
    1/4"-28
    		7/16"7/32"SAE Grade 2
    		ASME B18.2.210090490A2050000
    5/16"-18
    		1/2"17/64"SAE Grade 2
    		ASME B18.2.210090490A0300000
    5/16"-24
    		1/2"17/64"SAE Grade 2
    		ASME B18.2.210090490A2100000
    3/8"-16
    		9/16"21/64"SAE Grade 2
    		ASME B18.2.210090490A03100000
    3/8"-24
    		9/16"21/64"SAE Grade 2
    		ASME B18.2.210090490A21500000
    7/16"-14
    		11/16"3/8"SAE Grade 2
    		ASME B18.2.210090490A03200000
    7/16"-20
    		11/16"3/8"SAE Grade 2
    		ASME B18.2.210090490A22000000
    1/2"-13
    		3/4"7/16"SAE Grade 2
    		ASME B18.2.210090490A03300000
    1/2"-20
    		3/4"7/16"SAE Grade 2
    		ASME B18.2.210090490A22500000
    9/16"-12
    		7/8"31/64"SAE Grade 2
    		ASME B18.2.25090490A03400000
    9/16"-18
    		7/8"31/64"SAE Grade 2
    		ASME B18.2.25090490A23000000
    5/8"-11
    		15/16"35/64"SAE Grade 2
    		ASME B18.2.25090490A03500000
    5/8"-18
    		15/16"35/64"SAE Grade 2
    		ASME B18.2.25090490A23500000
    3/4"-10
    		1 1/8"41/64"SAE Grade 2
    		ASME B18.2.22590490A43600000
    3/4"-16
    		1 1/8"41/64"SAE Grade 2
    		ASME B18.2.22590490A24000000
    7/8"-9
    		1 5/16"3/4"SAE Grade 2
    		ASME B18.2.22590490A03700000
    7/8"-14
    		1 5/16"3/4"SAE Grade 2
    		ASME B18.2.21090490A24500000
    1"-8
    		1 1/2"55/64"SAE Grade 2
    		ASME B18.2.21090490A43800000
    1"-12
    		1 1/2"55/64"SAE Grade 2
    		ASME B18.2.21090490A25000000
    1"-14
    		1 1/2"55/64"SAE Grade 2
    		ASME B18.2.21090490A25500000
    1 1/8"-7
    		1 11/16"31/32"SAE Grade 2
    		ASME B18.2.21090490A43900000
    1 1/8"-12
    		1 11/16"31/32"SAE Grade 2
    		ASME B18.2.21090490A25800000
    1 1/4"-7
    		1 7/8"1 1/16"SAE Grade 2
    		ASME B18.2.2590490A44000000
    1 1/4"-12
    		1 7/8"1 1/16"SAE Grade 2
    		ASME B18.2.2590490A26000000
    1 3/8"-6
    		2 1/16"1 11/64"SAE Grade 2
    		ASME B18.2.2190490A4420000
    1 3/8"-12
    		2 1/16"1 11/64"SAE Grade 2
    		ASME B18.2.2190490A2630000
    1 1/2"-6
    		2 1/4"1 9/32"SAE Grade 2
    		ASME B18.2.2190490A4410000
    1 1/2"-12
    		2 1/4"1 9/32"SAE Grade 2
    		ASME B18.2.2190490A2650000
    1 5/8"-5 1/2
    		2 7/16"1 25/64"SAE Grade 2
    		ASME B18.2.2190490A0610000
    1 5/8"-12
    		2 7/16"1 25/64"SAE Grade 2
    		ASME B18.2.2190490A2660000
    1 3/4"-5
    		2 5/8"1 1/2"SAE Grade 2
    		ASME B18.2.2190490A04400000
    1 3/4"-12
    		2 5/8"1 1/2"SAE Grade 2
    		ASME B18.2.2190490A2680000
    1 7/8"-5
    		2 13/16"1 39/64"SAE Grade 2
    		ASME B18.2.2190490A06500000
    1 7/8"-12
    		2 13/16"1 39/64"SAE Grade 2
    		ASME B18.2.2190490A26900000
    2"-12
    		3"1 23/32"SAE Grade 2
    		ASME B18.2.2190490A27000000
    2 1/4"-4 1/2
    		3 3/8"1 15/16"SAE Grade 2
    		ASME B18.2.2190490A04800000
    2 1/4"-12
    		3 3/8"1 15/16"SAE Grade 2
    		ASME B18.2.2190490A27300000
    2 1/2"-4
    		3 3/4"2 5/32"SAE Grade 2
    		ASME B18.2.2190490A05100000
    2 1/2"-12
    		3 3/4"2 5/32"SAE Grade 2
    		ASME B18.2.2190490A27500000
    2 3/4"-4
    		4 1/8"2 3/8"SAE Grade 2
    		ASME B18.2.2190490A05300000
    3"-4
    		4 1/2"2 19/32"SAE Grade 2
    		ASME B18.2.2190490A05500000
    3"-12
    		4 1/2"2 19/32"SAE Grade 2
    		ASME B18.2.2190490A280000000
    3 1/2"-4
    		5 3/8"3 1/2"SAE Grade 2
    		ASME B18.2.2190490A310000000
     
    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.
    Super-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"—10091845A02900000
    1/4"-20
    		7/16"7/32"ASTM F5945092673A1130000
    1/4"-28
    		7/16"7/32"—10091845A1050000
    1/4"-28
    		7/16"7/32"ASTM F5945092673A1160000
    1/4"-32
    		7/16"7/32"—195621A1000000
    5/16"-18
    		1/2"17/64"—10091845A0300000
    5/16"-18
    		1/2"17/64"ASTM F5945092673A1190000
    5/16"-24
    		1/2"17/64"—10091845A1150000
    5/16"-24
    		1/2"17/64"ASTM F5945092673A1220000
    5/16"-32
    		1/2"17/64"—195621A2000000
    3/8"-16
    		9/16"21/64"—10091845A0310000
    3/8"-16
    		9/16"21/64"ASTM F5942592673A1250000
    3/8"-24
    		9/16"21/64"—5091845A1250000
    3/8"-24
    		9/16"21/64"ASTM F5942592673A1280000
    3/8"-32
    		9/16"21/64"—195621A3000000
    7/16"-14
    		11/16"3/8"—5091845A3000000
    7/16"-14
    		11/16"3/8"ASTM F5941092673A1310000
    7/16"-20
    		11/16"3/8"—5091845A1350000
    7/16"-20
    		11/16"3/8"ASTM F5941092673A1340000
    7/16"-28
    		11/16"3/8"—195621A4000000
    1/2"-13
    		3/4"7/16"—2591845A3100000
    1/2"-13
    		3/4"7/16"ASTM F5941092673A1370000
    1/2"-20
    		3/4"7/16"—2591845A1450000
    1/2"-20
    		3/4"7/16"ASTM F5941092673A1410000
    1/2"-28
    		3/4"7/16"—191845A34000000
    9/16"-12
    		7/8"31/64"—1091845A3150000
    9/16"-12
    		7/8"31/64"ASTM F5941092673A1990000
    9/16"-18
    		7/8"31/64"—1091845A3200000
    5/8"-11
    		15/16"35/64"—1091845A3250000
    5/8"-11
    		15/16"35/64"ASTM F594592673A1440000
    5/8"-18
    		15/16"35/64"—1091845A1650000
    5/8"-18
    		15/16"35/64"ASTM F594592673A1550000
    5/8"-24
    		15/16"35/64"—191845A34500000
    3/4"-10
    		1 1/8"41/64"—1091845A3300000
    3/4"-10
    		1 1/8"41/64"ASTM F594592673A1470000
    3/4"-16
    		1 1/8"41/64"—591845A1750000
    3/4"-16
    		1 1/8"41/64"ASTM F594592673A1570000
    3/4"-20
    		1 1/8"41/64"—191845A35000000
    7/8"-9
    		1 5/16"3/4"—591845A3350000
    7/8"-9
    		1 5/16"3/4"ASTM F594192673A1500000
    7/8"-14
    		1 5/16"3/4"—591845A1850000
    7/8"-14
    		1 5/16"3/4"ASTM F594192673A2960000
    7/8"-20
    		1 5/16"3/4"—191845A35500000
    1"-8
    		1 1/2"55/64"—591845A0380000
    1"-8
    		1 1/2"55/64"ASTM F594192673A1530000
    1"-12
    		1 1/2"55/64"—191845A2030000
    1"-12
    		1 1/2"55/64"ASTM F594192673A3310000
    1"-14
    		1 1/2"55/64"—191845A2050000
    1"-14
    		1 1/2"55/64"ASTM F594192673A3730000
    1 1/8"-7
    		1 11/16"31/32"—191845A0390000
    1 1/8"-7
    		1 11/16"31/32"ASTM F594192673A3820000
    1 1/8"-12
    		1 11/16"31/32"—191845A2150000
    1 1/4"-7
    		1 7/8"1 1/16"—191845A0400000
    1 1/4"-7
    		1 7/8"1 1/16"ASTM F594192673A4380000
    1 1/4"-12
    		1 7/8"1 1/16"—191845A2350000
    1 3/8"-6
    		2 1/16"1 11/64"—191845A0420000
    1 1/2"-6
    		2 1/4"1 9/32"—191845A0410000
    1 1/2"-6
    		2 1/4"1 9/32"ASTM F594192673A85700000
    1 1/2"-12
    		2 1/4"1 9/32"—191845A2650000
    1 3/4"-5
    		2 5/8"1 1/2"—191845A04400000
    2"-4 1/2
    		3"1 23/32"—191845A04500000
     
    Black-Oxide 18-8 Stainless Steel
    1/4"-20
    		7/16"7/32"—5097149A1000000
    1/4"-28
    		7/16"7/32"—5097149A1200000
    5/16"-18
    		1/2"17/64"—2597149A1500000
    5/16"-24
    		1/2"17/64"—2597149A1700000
    3/8"-16
    		9/16"21/64"—2597149A2000000
    3/8"-24
    		9/16"21/64"—2597149A2100000
    7/16"-14
    		11/16"3/8"—1097149A2300000
    7/16"-20
    		11/16"3/8"—1097149A2400000
    1/2"-13
    		3/4"7/16"—1097149A2500000
    1/2"-20
    		3/4"7/16"—1097149A2700000
    5/8"-11
    		15/16"35/64"—597149A3000000
    5/8"-18
    		15/16"35/64"—597149A3100000
    3/4"-10
    		1 1/8"41/64"—197149A3500000
    3/4"-16
    		1 1/8"41/64"—197149A3700000
     
    Super-Corrosion-Resistant 316 Stainless Steel
    1/4"-20
    		7/16"7/32"—10094804A0290000
    1/4"-20
    		7/16"7/32"ASTM F5945094819A0430000
    1/4"-28
    		7/16"7/32"—5094804A3050000
    1/4"-28
    		7/16"7/32"ASTM F5945094819A1000000
    5/16"-18
    		1/2"17/64"—5094804A0300000
    5/16"-18
    		1/2"17/64"ASTM F5942594819A0460000
    5/16"-24
    		1/2"17/64"—5094804A3150000
    5/16"-24
    		1/2"17/64"ASTM F5942594819A1150000
    3/8"-16
    		9/16"21/64"—5094804A3200000
    3/8"-16
    		9/16"21/64"ASTM F5942594819A0490000
    3/8"-24
    		9/16"21/64"—2594804A3250000
    3/8"-24
    		9/16"21/64"ASTM F5942594819A1340000
    7/16"-14
    		11/16"3/8"—2594804A3300000
    7/16"-14
    		11/16"3/8"ASTM F5941094819A0520000
    7/16"-20
    		11/16"3/8"—1094804A3350000
    7/16"-20
    		11/16"3/8"ASTM F5941094819A1480000
    1/2"-13
    		3/4"7/16"—1094804A3400000
    1/2"-13
    		3/4"7/16"ASTM F594594819A0550000
    1/2"-20
    		3/4"7/16"—1094804A3450000
    1/2"-20
    		3/4"7/16"ASTM F594594819A1490000
    9/16"-12
    		7/8"31/64"—594804A3480000
    9/16"-12
    		7/8"31/64"ASTM F594594819A1560000
    9/16"-18
    		7/8"31/64"—594804A3490000
    5/8"-11
    		15/16"35/64"—1094804A3510000
    5/8"-11
    		15/16"35/64"ASTM F594594819A0580000
    5/8"-18
    		15/16"35/64"—594804A3550000
    5/8"-18
    		15/16"35/64"ASTM F594594819A1720000
    3/4"-10
    		1 1/8"41/64"—594804A3600000
    3/4"-10
    		1 1/8"41/64"ASTM F594194819A0610000
    3/4"-16
    		1 1/8"41/64"—594804A3650000
    3/4"-16
    		1 1/8"41/64"ASTM F594194819A1800000
    7/8"-9
    		1 5/16"3/4"—194804A3700000
    7/8"-9
    		1 5/16"3/4"ASTM F594194819A0640000
    7/8"-14
    		1 5/16"3/4"—194804A3750000
    7/8"-14
    		1 5/16"3/4"ASTM F594194819A2390000
    1"-8
    		1 1/2"55/64"—194804A0380000
    1"-8
    		1 1/2"55/64"ASTM F594194819A0670000
    1"-12
    		1 1/2"55/64"—194804A1520000
    1"-12
    		1 1/2"55/64"ASTM F594194819A30400000
    1"-14
    		1 1/2"55/64"—194804A1560000
    1"-14
    		1 1/2"55/64"ASTM F594194819A4080000
    1 1/8"-7
    		1 11/16"31/32"—194804A0390000
    1 1/8"-7
    		1 11/16"31/32"ASTM F594194819A4090000
    1 1/4"-7
    		1 7/8"1 1/16"—194804A0400000
    1 1/4"-7
    		1 7/8"1 1/16"ASTM F594194819A42500000
    1 3/8"-6
    		2 1/16"1 11/64"—194804A1690000
    1 1/2"-6
    		2 1/4"1 9/32"—194804A0410000
    1 1/2"-6
    		2 1/4"1 9/32"ASTM F594194819A85400000
    1 3/4"-5
    		2 5/8"1 1/2"—194804A05500000
    2"-4 1/2
    		3"1 23/32"—194804A06500000
     
    High-Strength 17-4 PH Stainless Steel
    1/4"-20
    		7/16"7/32"ASTM F594193061A11300000
    5/16"-18
    		1/2"17/64"ASTM F594193061A11700000
    3/8"-16
    		9/16"21/64"ASTM F594193061A12200000
    1/2"-13
    		3/4"7/16"ASTM F594193061A12700000
    3/4"-10
    		1 1/8"41/64"ASTM F594193061A12800000
     
    Seize-Resistant High-Strength 410 Stainless Steel
    1/4"-20
    		7/16"7/32"—599129A0290000
    5/16"-18
    		1/2"17/64"—599129A0510000
    3/8"-16
    		9/16"21/64"—599129A3100000
    1/2"-13
    		3/4"7/16"—599129A32500000
     
    High-Temperature High-Strength A286 Stainless Steel
    1/4"-20
    		7/16"7/32"—193043A32700000
    5/16"-18
    		1/2"17/64"—193043A33200000
    3/8"-16
    		9/16"21/64"—193043A33900000
    1/2"-13
    		3/4"7/16"—193043A34600000
     
    Ultra-Corrosion-Resistant Alloy 20 Stainless Steel
    1/4"-20
    		7/16"7/32"—190775A0290000
    3/8"-16
    		9/16"21/64"—190775A0310000
    1/2"-13
    		3/4"7/16"—190775A03300000
     
    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.
    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
    11/16"-24
    		1"27/64"195621A700000000
     

    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
    		10091903A029000000
    5/16"-18
    		9/16"19/64"SAE Grade 5
    		5091903A0310000
    3/8"-16
    		11/16"23/64"SAE Grade 5
    		5091903A03200000
    1/2"-13
    		7/8"31/64"SAE Grade 5
    		2591903A03300000
    5/8"-11
    		1 1/16"39/64"SAE Grade 5
    		1091903A03400000
    3/4"-10
    		1 1/4"47/64"SAE Grade 5
    		1091903A03500000
    1"-8
    		1 5/8"63/64"SAE Grade 5
    		191903A0360000
    1 1/4"-7
    		2"1 7/32"SAE Grade 5
    		191903A0390000
     
    Steel
    1/4"-20
    		1/2"15/64"SAE Grade 5
    		10095045A0290000
    5/16"-18
    		9/16"19/64"SAE Grade 5
    		10095045A03000000
    3/8"-16
    		11/16"23/64"SAE Grade 5
    		5095045A03100000
    7/16"-14
    		3/4"27/64"SAE Grade 5
    		2595045A0320000
    1/2"-13
    		7/8"31/64"SAE Grade 5
    		2595045A03300000
    9/16"-12
    		15/16"35/64"SAE Grade 5
    		2595045A03400000
    5/8"-11
    		1 1/16"39/64"SAE Grade 5
    		1095045A0350000
    3/4"-10
    		1 1/4"47/64"SAE Grade 5
    		1095045A03600000
    7/8"-9
    		1 7/16"55/64"SAE Grade 5
    		595045A03700000
    1"-8
    		1 5/8"63/64"SAE Grade 5
    		595045A03800000
    1 1/8"-7
    		1 13/16"1 7/64"SAE Grade 5
    		195045A0390000
    1 1/4"-7
    		2"1 7/32"SAE Grade 5
    		195045A0400000
    1 3/8"-6
    		2 3/16"1 11/32"SAE Grade 5
    		195045A0410000
    1 1/2"-6
    		2 3/8"1 15/32"SAE Grade 5
    		195045A0420000
    1 3/4"-5
    		2 3/4"1 23/32"SAE Grade 5
    		195045A04400000
    2"-4 1/2
    		3 1/8"1 31/32"SAE Grade 5
    		195045A04600000
    2 1/4"-4 1/2
    		3 1/2"2 13/64"SAE Grade 5
    		195045A04800000
    2 1/2"-4
    		3 7/8"2 29/64"SAE Grade 5
    		195045A04900000
     
    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 A19410096460A110000000
    1/4"-28
    		1/2"15/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1945096460A12000000
    5/16"-18
    		9/16"19/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1945096460A2300000
    5/16"-24
    		9/16"19/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1942596460A2400000
    3/8"-16
    		11/16"23/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1945096460A25000000
    3/8"-24
    		11/16"23/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1942596460A26000000
    1/2"-13
    		7/8"31/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1942596460A37000000
    1/2"-20
    		7/8"31/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1941096460A3800000
    5/8"-11
    		1 1/16"39/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1941096460A51000000
    5/8"-18
    		1 1/16"39/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1941096460A53000000
    3/4"-10
    		1 1/4"47/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1941096460A62000000
    3/4"-16
    		1 1/4"47/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1941096460A64000000
    1"-8
    		1 5/8"63/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194596460A75000000
    1"-14
    		1 5/8"63/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194196460A7800000
     
    Black-Oxide Steel
    1/4"-20
    		1/2"15/64"ASTM Grade 2H
    		ASTM A194
    		2591026A02900000
    5/16"-18
    		9/16"19/64"ASTM Grade 2H
    		ASTM A194
    		1091026A0300000
    3/8"-16
    		11/16"23/64"ASTM Grade 2H
    		ASTM A194
    		1091026A0310000
    7/16"-14
    		3/4"27/64"ASTM Grade 2H
    		ASTM A194
    		1091026A0320000
    1/2"-13
    		7/8"31/64"ASTM Grade 2H
    		ASTM A194
    		1091026A0330000
    5/8"-11
    		1 1/16"39/64"ASTM Grade 2H
    		ASTM A194
    		591026A0350000
    3/4"-10
    		1 1/4"47/64"ASTM Grade 2H
    		ASTM A194
    		591026A0360000
    7/8"-9
    		1 7/16"55/64"ASTM Grade 2H
    		ASTM A194
    		191026A0370000
    1"-8
    		1 5/8"63/64"ASTM Grade 2H
    		ASTM A194
    		191026A0380000
     
    Hot-Dipped Galvanized Steel
    1/4"-20
    		1/2"15/64"ASTM Grade 2H
    		ASTM A194
    		5095025A37000000
    3/8"-16
    		11/16"23/64"ASTM Grade 2H
    		ASTM A194
    		5095025A38000000
    1/2"-13
    		7/8"31/64"ASTM Grade 2H
    		ASTM A194
    		2595025A40500000
    5/8"-11
    		1 1/16"39/64"ASTM Grade 2H
    		ASTM A194
    		1095025A41000000
    3/4"-10
    		1 1/4"47/64"ASTM Grade 2H
    		ASTM A194
    		1095025A41500000
    7/8"-9
    		1 7/16"55/64"ASTM Grade 2H
    		ASTM A194
    		595025A42000000
    1"-8
    		1 5/8"63/64"ASTM Grade 2H
    		ASTM A194
    		595025A42500000
    1 1/8"-7
    		1 13/16"1 7/64"ASTM Grade 2H
    		ASTM A194
    		195025A4300000
    1 1/8"-8
    		1 13/16"1 7/64"ASTM Grade 2H
    		ASTM A194
    		195025A4320000
    1 1/4"-7
    		2"1 7/32"ASTM Grade 2H
    		ASTM A194
    		195025A4350000
    1 1/4"-8
    		2"1 7/32"ASTM Grade 2H
    		ASTM A194
    		195025A4360000
    1 3/8"-6
    		2 3/16"1 11/32"ASTM Grade 2H
    		ASTM A194
    		195025A4370000
    1 1/2"-6
    		2 3/8"1 15/32"ASTM Grade 2H
    		ASTM A194
    		195025A44000000
    1 3/4"-5
    		2 3/4"1 23/32"ASTM Grade 2H
    		ASTM A194
    		195025A44500000
    2"-4 1/2
    		3 1/8"1 31/32"ASTM Grade 2H
    		ASTM A194
    		195025A45500000
     
    Steel
    1/4"-20
    		1/2"15/64"ASTM Grade 2H
    		ASTM A194
    		10090521A10600000
    1/4"-28
    		1/2"15/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1945090521A10400000
    5/16"-18
    		9/16"19/64"ASTM Grade 2H
    		ASTM A194
    		5090521A10700000
    5/16"-24
    		9/16"19/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1945090521A10800000
    3/8"-16
    		11/16"23/64"ASTM Grade 2H
    		ASTM A194
    		5090521A22500000
    3/8"-24
    		11/16"23/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1942590521A2290000
    7/16"-14
    		3/4"27/64"ASTM Grade 2H
    		ASTM A194
    		2590521A10900000
    7/16"-20
    		3/4"27/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1942590521A11000000
    1/2"-13
    		7/8"31/64"ASTM Grade 2H
    		ASTM A194
    		2590521A23500000
    1/2"-20
    		7/8"31/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1942590521A23600000
    9/16"-12
    		15/16"35/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1941090521A2810000
    5/8"-11
    		1 1/16"39/64"ASTM Grade 2H
    		ASTM A194
    		1090521A24000000
    5/8"-18
    		1 1/16"39/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1942590521A24200000
    3/4"-10
    		1 1/4"47/64"ASTM Grade 2H
    		ASTM A194
    		1090521A24500000
    3/4"-16
    		1 1/4"47/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1941090521A24700000
    7/8"-9
    		1 7/16"55/64"ASTM Grade 2H
    		ASTM A194
    		1090521A25000000
    7/8"-14
    		1 7/16"55/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A1941090521A25300000
    1"-8
    		1 5/8"63/64"ASTM Grade 2H
    		ASTM A194
    		590521A25500000
    1"-12
    		1 5/8"63/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194190521A2570000
    1"-14
    		1 5/8"63/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194590521A25900000
    1 1/8"-7
    		1 13/16"1 7/64"ASTM Grade 2H
    		ASTM A194
    		190521A2600000
    1 1/8"-8
    		1 13/16"1 7/64"ASTM Grade 2H
    		ASTM A194
    		190521A2650000
    1 1/8"-12
    		1 13/16"1 7/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194190521A2670000
    1 1/4"-7
    		2"1 7/32"ASTM Grade 2H
    		ASTM A194
    		190521A2700000
    1 1/4"-8
    		2"1 7/32"ASTM Grade 2H
    		ASTM A194
    		190521A2750000
    1 1/4"-12
    		2"1 7/32"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194190521A2780000
    1 3/8"-6
    		2 3/16"1 11/32"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194190521A2900000
    1 3/8"-8
    		2 3/16"1 11/32"ASTM Grade 2H
    		ASTM A194
    		190521A0420000
    1 3/8"-12
    		2 3/16"1 11/32"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194190521A2950000
    1 1/2"-6
    		2 3/8"1 15/32"ASTM Grade 2H
    		ASTM A194
    		190521A0390000
    1 1/2"-8
    		2 3/8"1 15/32"ASTM Grade 2H
    		ASTM A194
    		190521A0410000
    1 1/2"-12
    		2 3/8"1 15/32"ASTM Grade 2H
    		ASTM A194
    		190521A0520000
    1 5/8"-8
    		2 9/16"1 19/32"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194190521A0550000
    1 3/4"-5
    		2 3/4"1 23/32"ASTM Grade 2H
    		ASTM A194
    		190521A04300000
    1 3/4"-8
    		2 3/4"1 23/32"ASTM Grade 2H
    		ASTM A194
    		190521A04400000
    1 7/8"-8
    		2 15/16"1 27/32"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194190521A03700000
    2"-4 1/2
    		3 1/8"1 31/32"ASTM Grade 2H
    		ASTM A194
    		190521A03800000
    2"-8
    		3 1/8"1 31/32"ASTM Grade 2H
    		ASTM A194
    		190521A04600000
    2 1/4"-4 1/2
    		3 1/2"2 13/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194190521A28200000
    2 1/4"-8
    		3 1/2"2 13/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194190521A05000000
    2 1/2"-4
    		3 7/8"2 29/64"ASTM Grade 2H
    		ASME B18.2.2, ASTM A194190521A28300000
     
    Blue PTFE-Coated Steel
    1/2"-13
    		7/8"31/64"ASTM Grade 2H
    		ASTM A194
    		2590212A30000000
    5/8"-11
    		1 1/16"39/64"ASTM Grade 2H
    		ASTM A194
    		1090212A40000000
    3/4"-10
    		1 1/4"47/64"ASTM Grade 2H
    		ASTM A194
    		1090212A50000000
    7/8"-9
    		1 7/16"55/64"ASTM Grade 2H
    		ASTM A194
    		590212A60000000
    1"-8
    		1 5/8"63/64"ASTM Grade 2H
    		ASTM A194
    		590212A70000000
    1 1/8"-8
    		1 13/16"1 7/64"ASTM Grade 2H
    		ASTM A194
    		190212A8100000
    1 1/4"-8
    		2"1 7/32"ASTM Grade 2H
    		ASTM A194
    		190212A81100000
    1 3/8"-8
    		2 3/16"1 11/32"ASTM Grade 2H
    		ASTM A194
    		190212A81200000
    1 1/2"-8
    		2 3/8"1 15/32"ASTM Grade 2H
    		ASTM A194
    		190212A81300000
    1 3/4"-8
    		2 3/4"1 23/32"ASTM Grade 2H
    		ASTM A194
    		190212A81500000
    1 7/8"-8
    		2 15/16"1 27/32"ASTM Grade 2H
    		ASTM A194
    		190212A81600000
    2"-8
    		3 1/8"1 31/32"ASTM Grade 2H
    		ASTM A194
    		190212A81700000
     
    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 B18.2.210094811A02900000
    5/16"-18
    		9/16"19/64"ASME B18.2.210094811A0300000
    3/8"-16
    		11/16"23/64"ASME B18.2.210094811A03100000
    7/16"-14
    		3/4"27/64"ASME B18.2.25094811A23000000
    1/2"-13
    		7/8"31/64"ASME B18.2.25094811A23500000
    9/16"-12
    		15/16"35/64"ASME B18.2.22594811A24000000
    5/8"-11
    		1 1/16"39/64"ASME B18.2.22594811A24500000
    3/4"-10
    		1 1/4"47/64"ASME B18.2.21094811A25000000
    7/8"-9
    		1 7/16"55/64"ASME B18.2.21094811A25500000
    1"-8
    		1 5/8"63/64"ASME B18.2.2594811A03800000
    1 1/8"-7
    		1 13/16"1 7/64"ASME B18.2.2594811A26500000
    1 1/8"-8
    		1 13/16"1 7/64"ASME B18.2.2, SAE J995194811A26800000
    1 1/4"-7
    		2"1 7/32"ASME B18.2.2, SAE J995194811A2700000
    1 1/2"-6
    		2 3/8"1 15/32"ASME B18.2.2194811A0410000
    1 7/8"-8
    		2 15/16"1 27/32"ASME B18.2.2, SAE J995194811A05000000
    2"-4 1/2
    		3 1/8"1 31/32"ASME B18.2.2194811A07500000
     
    Black-Oxide Steel
    1/4"-20
    		1/2"15/64"—5091991A10100000
    5/16"-18
    		9/16"19/64"—5091991A10200000
    3/8"-16
    		11/16"23/64"—2591991A10300000
    1/2"-13
    		7/8"31/64"—1091991A10400000
     
    Steel
    1/4"-20
    		1/2"15/64"ASME B18.2.210090498A0290000
    5/16"-18
    		9/16"19/64"ASME B18.2.210090498A0300000
    3/8"-16
    		11/16"23/64"ASME B18.2.210090498A03100000
    7/16"-14
    		3/4"27/64"ASME B18.2.25090498A03200000
    1/2"-13
    		7/8"31/64"ASME B18.2.25090498A03300000
    9/16"-12
    		15/16"35/64"ASME B18.2.2, SAE J9952590498A3450000
    5/8"-11
    		1 1/16"39/64"ASME B18.2.22590498A35500000
    3/4"-10
    		1 1/4"47/64"ASME B18.2.22590498A36500000
    1"-8
    		1 5/8"63/64"ASME B18.2.2590498A38500000
    1 1/8"-7
    		1 13/16"1 7/64"ASME B18.2.2590498A39500000
    1 1/4"-7
    		2"1 7/32"ASME B18.2.2590498A41000000
    1 3/8"-6
    		2 3/16"1 11/32"ASME B18.2.2190498A0420000
    1 1/2"-6
    		2 3/8"1 15/32"ASME B18.2.2190498A0410000
    2"-4 1/2
    		3 1/8"1 31/32"ASME B18.2.2190498A04600000
     
    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.
    Super-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"10091849A029000000
    1/4"-28
    		1/2"15/64"5091849A1280000
    5/16"-18
    		9/16"19/64"5091849A0300000
    5/16"-24
    		9/16"19/64"2591849A1310000
    3/8"-16
    		11/16"23/64"2591849A6250000
    3/8"-24
    		11/16"23/64"1091849A6280000
    7/16"-14
    		3/4"27/64"1091849A6300000
    7/16"-20
    		3/4"27/64"1091849A6550000
    1/2"-13
    		7/8"31/64"1091849A6350000
    1/2"-20
    		7/8"31/64"591849A6360000
    9/16"-12
    		15/16"35/64"591849A6370000
    5/8"-11
    		1 1/16"39/64"1091849A64000000
    5/8"-18
    		1 1/16"39/64"591849A6600000
    3/4"-10
    		1 1/4"47/64"591849A6450000
    3/4"-16
    		1 1/4"47/64"191849A6650000
    7/8"-9
    		1 7/16"55/64"191849A6500000
    1"-8
    		1 5/8"63/64"191849A0380000
    1 1/8"-7
    		1 13/16"1 7/64"191849A0390000
    1 1/4"-7
    		2"1 7/32"191849A0400000
    1 3/8"-6
    		2 3/16"1 11/32"191849A0420000
    1 1/2"-6
    		2 3/8"1 15/32"191849A04300000
    1 3/4"-5
    		2 3/4"1 23/32"191849A04400000
     
    Super-Corrosion-Resistant 316 Stainless Steel
    1/4"-20
    		1/2"15/64"5091850A02900000
    1/4"-28
    		1/2"15/64"2591850A12800000
    5/16"-18
    		9/16"19/64"2591850A1850000
    5/16"-24
    		9/16"19/64"1091850A1880000
    3/8"-16
    		11/16"23/64"1091850A1900000
    3/8"-24
    		11/16"23/64"591850A1930000
    7/16"-14
    		3/4"27/64"1091850A1950000
    7/16"-20
    		3/4"27/64"591850A2300000
    1/2"-13
    		7/8"31/64"591850A2100000
    1/2"-20
    		7/8"31/64"591850A20400000
    5/8"-11
    		1 1/16"39/64"591850A2200000
    5/8"-18
    		1 1/16"39/64"191850A2350000
    3/4"-10
    		1 1/4"47/64"191850A2250000
    3/4"-16
    		1 1/4"47/64"191850A2400000
    7/8"-9
    		1 7/16"55/64"191850A0370000
    1"-8
    		1 5/8"63/64"191850A0380000
    1 1/8"-7
    		1 13/16"1 7/64"191850A0390000
    1 1/4"-7
    		2"1 7/32"191850A0400000
    1 3/8"-6
    		2 3/16"1 11/32"191850A04200000
    1 1/2"-6
    		2 3/8"1 15/32"191850A04300000
    1 3/4"-5
    		2 3/4"1 23/32"191850A04600000
    2"-4 1/2
    		3 1/8"1 31/32"191850A04900000
     
    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.
    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
    2"-4 1/2
    		3 1/8"1 31/32"191849A048000000
     
    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"190810A216000000
    5/8"-11
    		1 1/16"39/64"190810A21700000
    3/4"-10
    		1 1/4"47/64"190810A21800000
     
    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"1092049A02900000
    5/16"-18
    		9/16"19/64"1092049A03000000
    3/8"-16
    		11/16"23/64"592049A0310000
    1/2"-13
    		7/8"31/64"192049A0320000
    5/8"-11
    		1 1/16"39/64"192049A03300000
    3/4"-10
    		1 1/4"47/64"192049A03400000
     

    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
    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.
    Thread
    Size
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    5/8"-24
    		15/16"3/8"195621A600000000
     
    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.
    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"195621A900000000
     

    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
    Image of Product. Bottom orientation. Hex Nuts. Heavy-Profile Hex Nuts for High-Pressure Applications.
    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
    		194485A14000000
    1/2"-13
    		7/8"31/64"ASTM Grade 7
    		ASTM A194
    		194485A1500000
    5/8"-11
    		1 1/16"39/64"ASTM Grade 7
    		ASTM A194
    		194485A1600000
    3/4"-10
    		1 1/4"47/64"ASTM Grade 7
    		ASTM A194
    		194485A1700000
    7/8"-9
    		1 7/16"55/64"ASTM Grade 7
    		ASTM A194
    		194485A1800000
    1"-8
    		1 5/8"63/64"ASTM Grade 7
    		ASTM A194
    		194485A1900000
    1 1/8"-7
    		1 13/16"1 7/64"ASTM Grade 7
    		ASTM A194
    		194485A2100000
    1 1/8"-8
    		1 13/16"1 7/64"ASTM Grade 7
    		ASTM A194
    		194485A2200000
    1 1/4"-7
    		2"1 7/32"ASTM Grade 7
    		ASTM A194
    		194485A2300000
    1 1/4"-8
    		2"1 7/32"ASTM Grade 7
    		ASTM A194
    		194485A2400000
     
    Black-Oxide Steel
    1/2"-13
    		7/8"31/64"ASTM Grade 7
    		ASTM A194
    		194485A1300000
    5/8"-11
    		1 1/16"39/64"ASTM Grade 7
    		ASTM A194
    		194485A1100000
    3/4"-10
    		1 1/4"47/64"ASTM Grade 7
    		ASTM A194
    		194485A1200000
     
    Steel
    1/4"-20
    		1/2"15/64"ASTM Grade 7
    		ASTM A194
    		1094485A1210000
    3/8"-16
    		11/16"23/64"ASTM Grade 7
    		ASTM A194
    		1094485A0290000
    1/2"-13
    		7/8"31/64"ASTM Grade 7
    		ASTM A194
    		1094485A03300000
    5/8"-11
    		1 1/16"39/64"ASTM Grade 7
    		ASTM A194
    		1094485A03500000
    3/4"-10
    		1 1/4"47/64"ASTM Grade 7
    		ASTM A194
    		1094485A03600000
    7/8"-9
    		1 7/16"55/64"ASTM Grade 7
    		ASTM A194
    		594485A0370000
    1"-8
    		1 5/8"63/64"ASTM Grade 7
    		ASTM A194
    		594485A03800000
    1 1/8"-7
    		1 13/16"1 7/64"ASTM Grade 7
    		ASTM A194
    		194485A0410000
    1 1/4"-7
    		2"1 7/32"ASTM Grade 7
    		ASTM A194
    		194485A0440000
     
    Corrosion-Resistant Stainless Steel
    Image of Product. Bottom orientation. Hex Nuts. Heavy-Profile Hex Nuts for High-Pressure Applications.
    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
    		194252A705000000
    5/16"-24
    		9/16"19/64"ASTM Grade 8
    		ASTM A194
    		194252A70700000
    3/8"-24
    		11/16"23/64"ASTM Grade 8
    		ASTM A194
    		194252A71000000
    7/16"-14
    		3/4"27/64"ASTM Grade 8
    		ASTM A194
    		194252A71100000
    7/16"-20
    		3/4"27/64"ASTM Grade 8
    		ASTM A194
    		194252A71300000
    1/2"-20
    		7/8"31/64"ASTM Grade 8
    		ASTM A194
    		194252A71400000
    5/8"-18
    		1 1/16"39/64"ASTM Grade 8
    		ASTM A194
    		194252A71600000
    3/4"-16
    		1 1/4"47/64"ASTM Grade 8
    		ASTM A194
    		194252A72000000
    1"-14
    		1 5/8"63/64"ASTM Grade 8
    		ASTM A194
    		194252A72600000
     
    Corrosion-Resistant Stainless Steel with Material Certificate
    Image of Product. Bottom orientation. Hex Nuts. Heavy-Profile Hex Nuts for High-Pressure Applications.
    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
    		2594252A703000000
    5/16"-18
    		9/16"19/64"ASTM Grade 8
    		ASTM A194
    		1094252A7060000
    3/8"-16
    		11/16"23/64"ASTM Grade 8
    		ASTM A194
    		1094252A70900000
    1/2"-13
    		7/8"31/64"ASTM Grade 8
    		ASTM A194
    		1094252A71200000
    5/8"-11
    		1 1/16"39/64"ASTM Grade 8
    		ASTM A194
    		594252A71500000
    3/4"-10
    		1 1/4"47/64"ASTM Grade 8
    		ASTM A194
    		194252A7190000
    7/8"-9
    		1 7/16"55/64"ASTM Grade 8
    		ASTM A194
    		194252A7220000
    1"-8
    		1 5/8"63/64"ASTM Grade 8
    		ASTM A194
    		194252A72500000
    1 1/8"-7
    		1 13/16"1 7/64"ASTM Grade 8
    		ASTM A194
    		194252A7300000
    1 1/4"-7
    		2"1 7/32"ASTM Grade 8
    		ASTM A194
    		194252A7350000
     

    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
    Image of Product. Front orientation. Hex Nuts. Hex Nuts for High-Pressure Applications.
    Super-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.
    Super-Corrosion-Resistant 316 Stainless Steel
    5/16"-18
    		1/2"17/64"ASTM Grade 8M
    		ASTM A194
    		595005A125000000
    3/8"-16
    		9/16"21/64"ASTM Grade 8M
    		ASTM A194
    		195005A1300000
    1/2"-13
    		3/4"7/16"ASTM Grade 8M
    		ASTM A194
    		195005A1350000
    5/8"-11
    		15/16"35/64"ASTM Grade 8M
    		ASTM A194
    		195005A1400000
    3/4"-10
    		1 1/8"41/64"ASTM Grade 8M
    		ASTM A194
    		195005A14500000
    1"-8
    		1 1/2"55/64"ASTM Grade 8M
    		ASTM A194
    		195005A15000000
     

    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
    		190490A046000000
     
    back to top