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    24 Products
    About Hex Nuts
    industrial info icon

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

    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 1/8"-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
     
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