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    59 Products

    Structural Heavy-Profile Hex Nuts
    3D CAD models available

    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
     
    Extreme-Strength Steel
    Image of Product. Front orientation. Hex Nuts. Structural Heavy-Profile Hex Nuts.
    Rated Grade DH, 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.
    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.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Hot-Dipped Galvanized Steel
    1/2"-13
    7/8"31/64"ASTM Grade DH
    ASTM A563
    25000000000000000
    5/8"-11
    1 1/16"39/64"ASTM Grade DH
    ASTM A563
    1000000000000000
    3/4"-10
    1 1/4"47/64"ASTM Grade DH
    ASTM A563
    1000000000000000
    7/8"-9
    1 7/16"55/64"ASTM Grade DH
    ASTM A563
    1000000000000000
    1"-8
    1 5/8"63/64"ASTM Grade DH
    ASTM A563
    500000000000000
    1 1/4"-7
    2"1 7/32"ASTM Grade DH
    ASTM A563
    10000000000000
    1 1/2"-6
    2 3/8"1 15/32"ASTM Grade DH
    ASTM A563
    100000000000000
     

    Locknuts for use with Cotter Pins
    3D CAD models available

    Use these locknuts to secure rotating parts subjected to mild vibration, such as the wheels on carts and hand trucks. They’re not recommended for use on parts exposed to high vibration because the pin can shear under prolonged stress. These nuts are reusable, but you'll need a new cotter pin (not included) with each use.
    Medium-Strength Steel
    Image of ProductInUse. Front orientation. Locknuts. Locknuts for use with Cotter Pins.
    Image of Product. Front orientation. Locknuts. Locknuts for use with Cotter Pins.
    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.,
    mm
    Ht.,
    mm
    Fastener Strength
    Grade/Class
    For Cotter
    Pin Dia., mm
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
    M6 × 1 mm107.5ISO Class 8
    1.6DIN 935500000000000000
    M8 × 1.25 mm139.5ISO Class 8
    2DIN 93550000000000000
    M10 × 1.5 mm1712ISO Class 8
    2.5DIN 93550000000000000
    M12 × 1.5 mm1915ISO Class 8
    3.2DIN 93550000000000000
    M12 × 1.75 mm1915ISO Class 8
    3.2DIN 93550000000000000
    M14 × 1.5 mm2216ISO Class 8
    3.2DIN 93510000000000000
    M14 × 2 mm2216ISO Class 8
    3.2DIN 93510000000000000
    M16 × 1.5 mm2419ISO Class 8
    4DIN 9351000000000000000
    M16 × 2 mm2419ISO Class 8
    4DIN 93550000000000000
    M18 × 2.5 mm2721ISO Class 8
    4DIN 93510000000000000
    M20 × 2.5 mm3022ISO Class 8
    4DIN 935500000000000000
    M24 × 2 mm3627ISO Class 8
    5DIN 93510000000000000
    M24 × 3 mm3627ISO Class 8
    5DIN 93510000000000000
    M27 × 3 mm4130ISO Class 8
    5DIN 935100000000000000
    M30 × 3.5 mm4633ISO Class 8
    6.3DIN 935100000000000000
     
    Steel
    M12 × 1.5 mm1915ISO Class 8
    3.2DIN 935100000000000000
    M14 × 1.5 mm2216ISO Class 8
    3.2DIN 93510000000000000
    M14 × 2 mm2216ISO Class 8
    3.2DIN 93510000000000000
    M16 × 1.5 mm2419ISO Class 8
    4DIN 93510000000000000
    M16 × 2 mm2419ISO Class 8
    4DIN 93510000000000000
    M18 × 2.5 mm2721ISO Class 8
    4DIN 93510000000000000
    M20 × 2.5 mm3022ISO Class 8
    4DIN 93510000000000000
    M24 × 3 mm3627ISO Class 8
    5DIN 93510000000000000
    M30 × 3.5 mm4633ISO Class 8
    6.3DIN 935100000000000000
    M36 × 3 mm5538ISO Class 8
    6.3DIN 935100000000000000
    M36 × 4 mm5538ISO Class 8
    6.3DIN 935100000000000000
    M42 × 4.5 mm6546ISO Class 8
    8DIN 935100000000000000
    M48 × 5 mm7550ISO Class 8
    8DIN 935100000000000000
    M56 × 5.5 mm8557ISO Class 8
    8DIN 935100000000000000
     
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