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    142 Products

    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.
    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
    M10 × 1.5 mm19 mm12 mmASTM Grade 2H
    ASTM A194
    598498A1110000
    M12 × 1.75 mm21 mm12 mmASTM Grade 2H
    ASTM A194, DIN 6915598498A1000000
    M14 × 2 mm24 mm14 mmASTM Grade 2H
    ASTM A194, DIN 6915598498A1120000
    M16 × 2 mm27 mm17 mmASTM Grade 2H
    ASTM A194, DIN 6915598498A3000000
    M18 × 2.5 mm30 mm19 mmASTM Grade 2H
    ASTM A194, DIN 6915598498A11300000
    M20 × 2.5 mm33 mm20 mmASTM Grade 2H
    ASTM A194, DIN 6915598498A50000000
    M22 × 2.5 mm36 mm23 mmASTM Grade 2H
    ASTM A194, DIN 6915198498A1140000
    M24 × 3 mm41 mm24 mmASTM Grade 2H
    ASTM A194, DIN 6915198498A6000000
    M27 × 3 mm46 mm27 mmASTM Grade 2H
    ASTM A194, DIN 6915198498A1150000
    M30 × 3.5 mm50 mm30 mmASTM Grade 2H
    ASTM A194, DIN 6915198498A70000000
    M33 × 3.5 mm55 mm33 mmASTM Grade 2H
    ASTM A194, DIN 6915198498A11600000
    M36 × 3 mm60 mm36 mmASTM Grade 2H
    ASTM A194, DIN 6915198498A12300000
    M36 × 4 mm60 mm36 mmASTM Grade 2H
    ASTM A194, DIN 6915198498A80000000
    M39 × 4 mm65 mm39 mmASTM Grade 2H
    ASTM A194
    198498A11700000
    M42 × 3 mm70 mm42 mmASTM Grade 2H
    ASTM A194
    198498A14000000
    M42 × 4.5 mm70 mm42 mmASTM Grade 2H
    ASTM A194
    198498A11800000
    M45 × 4.5 mm75 mm45 mmASTM Grade 2H
    ASTM A194
    198498A21100000
    M48 × 3 mm80 mm48 mmASTM Grade 2H
    ASTM A194
    198498A21200000
    M48 × 5 mm80 mm48 mmASTM Grade 2H
    ASTM A194
    198498A11900000
    M52 × 5 mm85 mm52 mmASTM Grade 2H
    ASTM A194
    198498A12100000
    M56 × 5.5 mm90 mm56 mmASTM Grade 2H
    ASTM A194
    198498A21300000
    M64 × 6 mm100 mm64 mmASTM Grade 2H
    ASTM A194
    198498A12200000
     
    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
     

    Thin-Heavy-Profile Hex Nuts

    About half the height of standard-profile hex nuts and 10% wider, these fit in spaces with low clearance and handle heavier loads by distributing them over a larger area. You can also use them as jam nuts by threading them against another hex nut to hold it in place.
    Extreme-Strength Steel
    Image of Product. Front orientation. Hex Nuts. Thin-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-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
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
    1/4"-20
    1/2"11/64"ASTM Grade 2H
    ASME B18.2.2, ASTM A194591879A029000000
    5/16"-18
    9/16"13/64"ASTM Grade 2H
    ASME B18.2.2, ASTM A194591879A03000000
    3/8"-16
    11/16"15/64"ASTM Grade 2H
    ASME B18.2.2, ASTM A194591879A03100000
    1/2"-13
    7/8"19/64"ASTM Grade 2H
    ASME B18.2.2, ASTM A194591879A03200000
    5/8"-11
    1 1/16"23/64"ASTM Grade 2H
    ASME B18.2.2, ASTM A194591879A03300000
    3/4"-10
    1 1/4"27/64"ASTM Grade 2H
    ASME B18.2.2, ASTM A194591879A03400000
     
    Steel
    1/4"-20
    1/2"11/64"ASTM Grade 2H
    ASME B18.2.2, ASTM A194195010A1300000
    3/8"-16
    11/16"15/64"ASTM Grade 2H
    ASME B18.2.2, ASTM A194595010A14000000
    7/16"-14
    3/4"17/64"ASTM Grade 2H
    ASME B18.2.2, ASTM A194195010A1450000
    1/2"-13
    7/8"19/64"ASTM Grade 2H
    ASME B18.2.2, ASTM A194595010A15000000
    5/8"-11
    1 1/16"23/64"ASTM Grade 2H
    ASME B18.2.2, ASTM A194195010A1600000
    3/4"-10
    1 1/4"27/64"ASTM Grade 2H
    ASME B18.2.2, ASTM A194195010A1650000
    7/8"-9
    1 7/16"31/64"ASTM Grade 2H
    ASME B18.2.2, ASTM A194195010A1700000
    1"-8
    1 5/8"35/64"ASTM Grade 2H
    ASME B18.2.2, ASTM A194195010A1750000
    1 1/8"-7
    1 13/16"39/64"ASTM Grade 2H
    ASME B18.2.2, ASTM A194195010A1800000
    1 1/4"-7
    2"23/32"ASTM Grade 2H
    ASME B18.2.2, ASTM A194195010A1900000
    1 3/8"-6
    2 3/16"25/32"ASTM Grade 2H
    ASME B18.2.2, ASTM A194195010A3200000
    1 1/2"-6
    2 3/8"27/32"ASTM Grade 2H
    ASME B18.2.2, ASTM A194195010A2100000
    1 3/4"-5
    2 3/4"31/32"ASTM Grade 2H
    ASME B18.2.2, ASTM A194195010A22000000
    2"-4 1/2
    3 1/8"1 3/32"ASTM Grade 2H
    ASME B18.2.2, ASTM A194195010A24000000
     

    Coupling Nuts

    Also known as extension nuts, these are commonly used to connect lengths of threaded rod and join threaded parts.
    Extreme-Strength Steel
    Image of Product. Front orientation. Coupling Nuts. Coupling Nuts.
    Made from Grade 2H steel, these are about 20% stronger than high-strength steel coupling nuts. Use them with threaded rods that have a comparable strength rating to avoid stripping threads during installation.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Each
    Thread
    Size
    Lg.
    Wd.
    Fastener Strength
    Grade/Class
    Threading
    1-9
    10-Up
    Steel
    1/4"-20
    7/8"1/2"ASTM Grade 2H
    Fully Threaded90654A305000000000000
    3/8"-16
    1 3/4"11/16"ASTM Grade 2H
    Fully Threaded90654A3110000000000
    1/2"-13
    1 3/4"7/8"ASTM Grade 2H
    Fully Threaded90654A3170000000000
    5/8"-11
    2 1/8"1 1/16"ASTM Grade 2H
    Fully Threaded90654A3230000000000
    3/4"-10
    2 1/4"1 1/4"ASTM Grade 2H
    Fully Threaded90654A3290000000000
    7/8"-9
    2 1/2"1 1/2"ASTM Grade 2H
    Fully Threaded90654A3340000000000
    1"-8
    2 3/4"1 5/8"ASTM Grade 2H
    Fully Threaded90654A3400000000000
    1 1/4"-7
    3"2"ASTM Grade 2H
    Fully Threaded90654A3460000000000
    1 1/2"-6
    3 1/2"2 1/2"ASTM Grade 2H
    Fully Threaded90654A3510000000000
     
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