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    68 Products
    About Hex Nuts
    industrial info icon

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

    Hex Nut Profile

    Material

    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
    Certificate Type
    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
    		Material Certificate with Traceable Lot Number
    		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
    		Material Certificate with Traceable Lot Number
    		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 1/8"-8
    		1 13/16"1 7/64"ASTM Grade 7
    		ASTM A194
    		—194485A1110000
    1 1/4"-7
    		2"1 7/32"ASTM Grade 7
    		ASTM A194
    		—194485A0440000
    1 1/4"-8
    		2"1 7/32"ASTM Grade 7
    		ASTM A194
    		—194485A1120000
     
    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.
    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
    Certificate Type
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    1/4"-20
    		1/2"15/64"ASTM Grade 8
    		ASTM A194
    		Material Certificate with Traceable Lot Number
    		2594252A70300000
    1/4"-28
    		1/2"15/64"ASTM Grade 8
    		ASTM A194
    		—194252A70500000
    5/16"-18
    		9/16"19/64"ASTM Grade 8
    		ASTM A194
    		Material Certificate with Traceable Lot Number
    		1094252A7060000
    5/16"-24
    		9/16"19/64"ASTM Grade 8
    		ASTM A194
    		—194252A70700000
    3/8"-16
    		11/16"23/64"ASTM Grade 8
    		ASTM A194
    		Material Certificate with Traceable Lot Number
    		1094252A7090000
    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
    		Material Certificate with Traceable Lot Number
    		194252A71100000
    7/16"-20
    		3/4"27/64"ASTM Grade 8
    		ASTM A194
    		Material Certificate with Traceable Lot Number
    		194252A71300000
    1/2"-13
    		7/8"31/64"ASTM Grade 8
    		ASTM A194
    		Material Certificate with Traceable Lot Number
    		1094252A71200000
    1/2"-20
    		7/8"31/64"ASTM Grade 8
    		ASTM A194
    		Material Certificate with Traceable Lot Number
    		194252A71400000
    5/8"-11
    		1 1/16"39/64"ASTM Grade 8
    		ASTM A194
    		Material Certificate with Traceable Lot Number
    		594252A71500000
    5/8"-18
    		1 1/16"39/64"ASTM Grade 8
    		ASTM A194
    		—194252A71600000
    3/4"-10
    		1 1/4"47/64"ASTM Grade 8
    		ASTM A194
    		Material Certificate with Traceable Lot Number
    		194252A7190000
    3/4"-16
    		1 1/4"47/64"ASTM Grade 8
    		ASTM A194
    		Material Certificate with Traceable Lot Number
    		194252A72000000
    7/8"-9
    		1 7/16"55/64"ASTM Grade 8
    		ASTM A194
    		Material Certificate with Traceable Lot Number
    		194252A7220000
    1"-8
    		1 5/8"63/64"ASTM Grade 8
    		ASTM A194
    		Material Certificate with Traceable Lot Number
    		194252A7250000
    1"-14
    		1 5/8"63/64"ASTM Grade 8
    		ASTM A194
    		—194252A72600000
    1 1/8"-7
    		1 13/16"1 7/64"ASTM Grade 8
    		ASTM A194
    		Material Certificate with Traceable Lot Number
    		194252A73000000
    1 1/8"-8
    		1 13/16"1 7/64"ASTM Grade 8
    		ASTM A194
    		Material Certificate with Traceable Lot Number
    		194252A7320000
    1 1/4"-7
    		2"1 7/32"ASTM Grade 8
    		ASTM A194
    		Material Certificate with Traceable Lot Number
    		194252A73500000
     
    Highly Corrosion-Resistant 316 Stainless Steel
    1/4"-20
    		1/2"1/4"ASTM Grade 8M
    		ASTM A194
    		—5097619A89000000
    5/16"-18
    		9/16"19/64"ASTM Grade 8M
    		ASTM A194
    		Material Certificate with Traceable Lot Number
    		1097619A1100000
    3/8"-16
    		11/16"23/64"ASTM Grade 8M
    		ASTM A194
    		—597619A2200000
    7/16"-14
    		3/4"27/64"ASTM Grade 8M
    		ASTM A194
    		Material Certificate with Traceable Lot Number
    		597619A3300000
    1/2"-13
    		7/8"31/64"ASTM Grade 8M
    		ASTM A194
    		Material Certificate with Traceable Lot Number
    		597619A4400000
    5/8"-11
    		1 1/16"39/64"ASTM Grade 8M
    		ASTM A194
    		—197619A5500000
    3/4"-10
    		1 1/4"47/64"ASTM Grade 8M
    		ASTM A194
    		—197619A6600000
    7/8"-9
    		1 7/16"55/64"ASTM Grade 8M
    		ASTM A194
    		Material Certificate with Traceable Lot Number
    		197619A7700000
    1"-8
    		1 5/8"63/64"ASTM Grade 8M
    		ASTM A194
    		Material Certificate with Traceable Lot Number
    		197619A8800000
    1 1/8"-7
    		1 13/16"1 9/64"ASTM Grade 8M
    		ASTM A194
    		—197619A91000000
    1 1/8"-8
    		1 13/16"1 9/64"ASTM Grade 8M
    		ASTM A194
    		Material Certificate with Traceable Lot Number
    		197619A92000000
    1 1/4"-7
    		2"1 1/4"ASTM Grade 8M
    		ASTM A194
    		Material Certificate with Traceable Lot Number
    		197619A93000000
    1 1/4"-8
    		2"1 1/4"ASTM Grade 8M
    		ASTM A194
    		—197619A94000000
    1 1/2"-6
    		2 3/8"1 1/2"ASTM Grade 8M
    		ASTM A194
    		Material Certificate with Traceable Lot Number
    		197619A95000000
    1 1/2"-8
    		2 3/8"1 1/2"ASTM Grade 8M
    		ASTM A194
    		Material Certificate with Traceable Lot Number
    		197619A96000000
    1 5/8"-8
    		2 9/16"1 5/8"ASTM Grade 8M
    		ASTM A194
    		Material Certificate with Traceable Lot Number
    		197619A97000000
    1 3/4"-8
    		2 3/4"1 3/4"ASTM Grade 8M
    		ASTM A194
    		Material Certificate with Traceable Lot Number
    		197619A98000000
    2"-8
    		3 1/8"2 1/64"ASTM Grade 8M
    		ASTM A194
    		Material Certificate with Traceable Lot Number
    		197619A99000000
     

    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.
    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
    Certificate Type
    Pkg.
    Qty.
    Pkg.
    Highly 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
    		Material Certificate with Traceable Lot Number
    		195005A1350000
    5/8"-11
    		15/16"35/64"ASTM Grade 8M
    		ASTM A194
    		Material Certificate with Traceable Lot Number
    		195005A1400000
    3/4"-10
    		1 1/8"41/64"ASTM Grade 8M
    		ASTM A194
    		Material Certificate with Traceable Lot Number
    		195005A14500000
    1"-8
    		1 1/2"55/64"ASTM Grade 8M
    		ASTM A194
    		—195005A15000000
     
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