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    63 Products
    About Hex Nuts
    industrial info icon

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

    Structural Heavy-Profile Hex Nuts

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

    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.
    Corrosion-Resistant Stainless Steel
    Image of Product. Front orientation. Hex Nuts. Heavy-Profile Hex Nuts.
    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.
    Super-Corrosion-Resistant 316 Stainless Steel
    1/4"-20
    1/2"15/64"50000000000000000
    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
    2"-4 1/2
    3 1/8"1 31/32"100000000000000
     
    Corrosion-Resistant Stainless Steel with Material Certificate
    Image of Product. Front orientation. Hex Nuts. Heavy-Profile Hex Nuts.
    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.
    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.
    Super-Corrosion-Resistant 316 Stainless Steel
    1 3/8"-6
    2 3/16"1 11/32"1000000000000000
     

    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.
    Corrosion-Resistant Stainless Steel
    Image of Product. Bottom orientation. Hex Nuts. Heavy-Profile 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
    1/4"-20
    1/2"1/4"ASTM Grade 8M
    ASTM A194
    5000000000000000
    5/16"-18
    9/16"19/64"ASTM Grade 8M
    ASTM A194
    100000000000000
    3/8"-16
    11/16"23/64"ASTM Grade 8M
    ASTM A194
    50000000000000
    7/16"-14
    3/4"27/64"ASTM Grade 8M
    ASTM A194
    50000000000000
    5/8"-11
    1 1/16"39/64"ASTM Grade 8M
    ASTM A194
    10000000000000
    3/4"-10
    1 1/4"47/64"ASTM Grade 8M
    ASTM A194
    10000000000000
    1 1/8"-7
    1 13/16"1 9/64"ASTM Grade 8M
    ASTM A194
    10000000000000
    1 1/8"-8
    1 13/16"1 9/64"ASTM Grade 8M
    ASTM A194
    10000000000000
    1 1/4"-7
    2"1 1/4"ASTM Grade 8M
    ASTM A194
    10000000000000
    1 1/4"-8
    2"1 1/4"ASTM Grade 8M
    ASTM A194
    10000000000000
    1 1/2"-8
    2 3/8"1 1/2"ASTM Grade 8M
    ASTM A194
    100000000000000
    1 5/8"-8
    2 9/16"1 5/8"ASTM Grade 8M
    ASTM A194
    100000000000000
     
    Corrosion-Resistant Stainless Steel with Material Certificate
    Image of Product. Bottom orientation. Hex Nuts. Heavy-Profile 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.
    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.
    Super-Corrosion-Resistant 316 Stainless Steel
    1/2"-13
    7/8"31/64"ASTM Grade 8M
    ASTM A194
    500000000000000
    7/8"-9
    1 7/16"55/64"ASTM Grade 8M
    ASTM A194
    10000000000000
    1"-8
    1 5/8"63/64"ASTM Grade 8M
    ASTM A194
    10000000000000
    1 1/2"-6
    2 3/8"1 1/2"ASTM Grade 8M
    ASTM A194
    100000000000000
    1 3/4"-8
    2 3/4"1 3/4"ASTM Grade 8M
    ASTM A194
    100000000000000
    2"-8
    3 1/8"2 1/64"ASTM Grade 8M
    ASTM A194
    100000000000000
     
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