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    73 Products

    Hex Nuts
    3D CAD models available

    The most commonly used hex nuts, these are suitable for fastening most machinery and equipment.
    Medium-Strength Steel
    Image of Product. Front orientation. Hex Nuts. Hex Nuts.
    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.
    Black Corrosion-Resistant-Coated Steel—Combines a finished appearance with the rust resistance of stainless steel. The coating has been tested to extreme standards, including 1,000 hours of salt spray resistance, to hold up in wet and outdoor environments. Also known as black luster.
    Thread
    Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Black Corrosion-Resistant-Coated Steel
    1/4"-20
    7/16"7/32"SAE Grade 5
    ASME B18.2.21000000000000000
    5/16"-18
    1/2"17/64"SAE Grade 5
    ASME B18.2.21000000000000000
    3/8"-16
    9/16"21/64"SAE Grade 5
    ASME B18.2.250000000000000
    7/16"-14
    11/16"3/8"SAE Grade 5
    ASME B18.2.250000000000000
    1/2"-13
    3/4"7/16"SAE Grade 5
    ASME B18.2.250000000000000
    9/16"-12
    7/8"31/64"SAE Grade 5
    ASME B18.2.2500000000000000
    5/8"-11
    15/16"35/64"SAE Grade 5
    ASME B18.2.210000000000000
    3/4"-10
    1 1/8"41/64"SAE Grade 5
    ASME B18.2.210000000000000
     
    Lightweight Aluminum
    Image of Product. Front orientation. Hex Nuts. Hex Nuts.
    Black Corrosion-Resistant-Coated 6061 Aluminum—Offers better rust resistance than plain aluminum. Also known as black luster, the coating creates a finished appearance and has been tested to extreme standards, including 1,000 hours of salt spray resistance, to hold up in wet and outdoor environments. One-third the weight of steel, these nuts are suitable for robotics, automation, and other applications that have weight limitations.
    Thread
    Size
    Wd.
    Ht.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Black Corrosion-Resistant-Coated 6061 Aluminum
    8-32
    11/32"1/8"ASME B18.2.2500000000000000
    10-24
    3/8"1/8"ASME B18.2.250000000000000
    10-32
    3/8"1/8"ASME B18.2.250000000000000
    1/4"-20
    7/16"7/32"ASME B18.2.250000000000000
    5/16"-18
    1/2"17/64"ASME B18.2.250000000000000
    3/8"-16
    9/16"21/64"ASME B18.2.2500000000000000
    1/2"-13
    3/4"7/16"ASME B18.2.210000000000000
     

    Nylon-Insert Locknuts
    3D CAD models available

    Versatile yet economical, these are the most commonly used locknuts. The nylon insert grips the screw to prevent loosening from moderate vibration without damaging threads. However, the insert may become brittle if exposed to high temperatures. These locknuts are reusable a handful of times, but the holding power decreases with each use.
    High-Strength Steel
    Image of Product. Front orientation. Locknuts. Nylon-Insert Locknuts.
    Rated Grade 8, Grade C, or Class 10, these locknuts 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-Corrosion-Resistant-Coated Steel—These nuts combine a finished appearance with the rust resistance of stainless steel. The coating has been tested to extreme standards, including 1,000 hours of salt spray resistance, to hold up in wet and outdoor environments. Also known as black luster.
    Thread Size
    Wd.,
    mm
    Ht.,
    mm
    Fastener Strength
    Grade/Class
    Insert Max.
    Temp., ° F
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Black-Corrosion-Resistant-Coated Steel
    M4 × 0.7 mm75ISO Class 10
    220DIN 9855000000000000000
    M5 × 0.8 mm85ISO Class 10
    220DIN 985500000000000000
    M6 × 1 mm106ISO Class 10
    220DIN 985500000000000000
    M8 × 1.25 mm138ISO Class 10
    220DIN 985500000000000000
    M10 × 1.5 mm1710ISO Class 10
    220DIN 985500000000000000
    M12 × 1.75 mm1912ISO Class 10
    220DIN 98510000000000000
    M14 × 2 mm2214ISO Class 10
    220DIN 98510000000000000
     
    Medium-Strength Steel
    Image of Product. Front orientation. Locknuts. Nylon-Insert Locknuts.
    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.
    Black-Corrosion-Resistant-Coated Steel—These nuts combine a finished appearance with the rust resistance of stainless steel. The coating has been tested to extreme standards, including 1,000 hours of salt spray resistance, to hold up in wet and outdoor environments. Also known as black luster.
    Thread Size
    Wd.,
    mm
    Ht.,
    mm
    Fastener Strength
    Grade/Class
    Insert Max.
    Temp., ° F
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Black-Corrosion-Resistant-Coated Steel
    M4 × 0.7 mm75ISO Class 8
    220DIN 985, ISO 105115000000000000000
    M5 × 0.8 mm85ISO Class 8
    220DIN 985, ISO 10511500000000000000
    M6 × 1 mm106ISO Class 8
    220DIN 985, ISO 10511500000000000000
    M8 × 1.25 mm138ISO Class 8
    220DIN 985, ISO 10511500000000000000
    M10 × 1.5 mm1710ISO Class 8
    220DIN 985, ISO 10511500000000000000
    M12 × 1.75 mm1912ISO Class 8
    220DIN 985, ISO 1051110000000000000
    M14 × 2 mm2214ISO Class 8
    220DIN 985, ISO 1051110000000000000
     
    Low-Strength Steel
    Image of Product. Front orientation. Locknuts. Nylon-Insert Locknuts.
    Rated Grade 2, Class 6, or lower, these locknuts are about half as strong as medium-strength steel nuts. Use them with screws that have a similar strength rating to avoid stripping threads during installation.
    Black-Corrosion-Resistant-Coated Steel—These nuts combine a finished appearance with the rust resistance of stainless steel. The coating has been tested to extreme standards, including 1,000 hours of salt spray resistance, to hold up in wet and outdoor environments. Also known as black luster.
    Thread
    Size
    Wd.
    Ht.
    Insert Max.
    Temp., ° F
    Pkg.
    Qty.
    Pkg.
    Black-Corrosion-Resistant-Coated Steel
    6-32
    5/16"11/64"220500000000000000
    8-32
    11/32"15/64"22050000000000000
    10-24
    3/8"15/64"22050000000000000
    10-32
    3/8"15/64"22050000000000000
    1/4"-20
    7/16"5/16"22050000000000000
    5/16"-18
    1/2"11/32"22050000000000000
    3/8"-16
    9/16"29/64"22050000000000000
    1/2"-13
    3/4"19/32"220500000000000000
     

    Thin-Profile Nylon-Insert Locknuts
    3D CAD models available

    About half the height of standard-profile locknuts, these fit in spaces with low clearance. You can also use them as jam nuts by threading them against a hex nut to hold it in place. The nylon insert grips the screw to prevent loosening from moderate vibration without damaging threads. However, the insert may become brittle if exposed to high temperatures. These locknuts are reusable a handful of times, but the holding power decreases with each use.
    Low-Strength Steel
    Image of Product. Front orientation. Locknuts. Thin-Profile Nylon-Insert Locknuts.
    Rated Grade 2, Class 6, or lower, these locknuts are about half as strong as medium-strength steel nuts. Use them with screws that have a similar strength rating to avoid stripping threads during installation.
    Black-Corrosion-Resistant-Coated Steel—These nuts combine a finished appearance with the rust resistance of stainless steel. The coating has been tested to extreme standards, including 1,000 hours of salt spray resistance, to hold up in wet and outdoor environments. Also known as black luster.
    Thread
    Size
    Wd.
    Ht.
    Insert Max.
    Temp., ° F
    Pkg.
    Qty.
    Pkg.
    Black-Corrosion-Resistant-Coated Steel
    6-32
    5/16"1/8"220500000000000000
    8-32
    11/32"11/64"22050000000000000
    10-24
    3/8"11/64"22050000000000000
    10-32
    3/8"11/64"22050000000000000
    1/4"-20
    7/16"13/64"22050000000000000
    5/16"-18
    1/2"1/4"22050000000000000
    3/8"-16
    9/16"17/64"22050000000000000
    1/2"-13
    3/4"5/16"22050000000000000
     

    Thin-Heavy-Profile Nylon-Insert Locknuts
    3D CAD models available

    About half the height of standard-profile locknuts 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 a hex nut to hold it in place. The nylon insert grips the screw to prevent loosening from moderate vibration without damaging threads. However, the insert may become brittle if exposed to high temperatures. These locknuts are reusable a handful of times, but the holding power decreases with each use.
    Low-Strength Steel
    Image of Product. Front orientation. Locknuts. Thin-Heavy-Profile Nylon-Insert Locknuts.
    Rated Grade 2, Class 6, or lower, these locknuts are about half as strong as medium-strength steel nuts. Use them with screws that have a similar strength rating to avoid stripping threads during installation.
    Black-Corrosion-Resistant-Coated Steel—These nuts combine a finished appearance with the rust resistance of stainless steel. The coating has been tested to extreme standards, including 1,000 hours of salt spray resistance, to hold up in wet and outdoor environments. Also known as black luster.
    Thread
    Size
    Wd.
    Ht.
    Insert Max.
    Temp., ° F
    Pkg.
    Qty.
    Pkg.
    Black-Corrosion-Resistant-Coated Steel
    1/4"-20
    1/2"9/32"250500000000000000
    5/16"-18
    9/16"5/16"25050000000000000
    3/8"-16
    11/16"13/32"25010000000000000
    1/2"-13
    7/8"17/32"25010000000000000
     

    Nylon-Insert Flange Nuts
    3D CAD models available

    A nylon insert grips the screw for a stronger hold than a serrated flange, without damaging threads or marring the surface of your material. However, the insert may become brittle if exposed to high temperatures. These nuts have a flange that distributes pressure evenly across the mounting surface, so you don't need a separate washer. They are ideal for securing screws in oversized or irregularly shaped holes since the flange covers a larger area than standard nuts. You can reuse them a handful of times, but their holding power will decrease with each use. Also known as collar nuts.
    Medium-Strength Steel
    Image of Product. Front orientation. Flange Nuts. Nylon-Insert Flange Nuts.
    Rated Grade 5, Grade F, or Class 8, these 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.
    Black Corrosion-Resistant-Coated Steel—Combines a finished appearance with the rust resistance of stainless steel. The coating has been tested to extreme standards, including 1,000 hours of salt spray resistance, to hold up in wet and outdoor environments. Also known as black luster.
    Flange,
    mm
    Thread Size
    Wd.,
    mm
    Ht.,
    mm
    Dia.
    Thk.
    Fastener Strength
    Grade/Class
    Specs.
    Met
    Insert Max.
    Temp., ° F
    Pkg.
    Qty.
    Pkg.
    Black Corrosion-Resistant-Coated Steel
    M5 × 0.8 mm87.111.81ISO Class 8
    DIN 6926250500000000000000
    M6 × 1 mm109.114.21.1ISO Class 8
    DIN 692625050000000000000
    M8 × 1.25 mm1311.117.91.2ISO Class 8
    DIN 692625050000000000000
    M12 × 1.75 mm1816.1261.8ISO Class 8
    DIN 6926250500000000000000
     

    Cap Nuts
    3D CAD models available

    Conceal and protect protruding screw threads while fastening parts together. These nuts help prevent damage to surrounding materials and reduce injuries. Also known as acorn nuts, they have a smooth, rounded head that creates a finished look.
    Low-Strength Steel
    Image of Product. Front orientation. Cap Nuts. Cap Nuts.
    Rated Grade 2, Class 6, or lower, these nuts are about half as strong as medium-strength steel nuts. They are suitable for light duty fastening applications, such as securing access panels. Use them with screws that have a similar strength rating to avoid stripping threads during installation.
    Black Corrosion-Resistant-Coated Steel—Combines a finished appearance with the rust resistance of stainless steel. The coating has been tested to extreme standards, including 1,000 hours of salt spray resistance, to hold up in wet and outdoor environments. Also known as black luster.
    Thread
    Size
    Thread
    Dp.
    Wd.
    Ht.
    Pkg.
    Qty.
    Pkg.
    Black Corrosion-Resistant-Coated Steel
    4-40
    5/32"1/4"1/4"10000000000000000
    6-32
    5/32"5/16"11/32"1000000000000000
    8-32
    5/32"5/16"11/32"1000000000000000
    10-24
    3/16"3/8"13/32"50000000000000
    10-32
    3/16"3/8"13/32"50000000000000
    1/4"-20
    1/4"7/16"15/32"50000000000000
    5/16"-18
    5/16"1/2"17/32"500000000000000
    3/8"-16
    3/8"9/16"5/8"10000000000000
    7/16"-14
    7/16"5/8"11/16"10000000000000
    1/2"-13
    1/2"3/4"13/16"10000000000000
    9/16"-12
    9/16"7/8"15/16"10000000000000
    5/8"-11
    5/8"15/16"1"10000000000000
     
    Medium-Strength Steel
    Image of Product. Front orientation. Cap Nuts. Cap Nuts.
    About twice as strong as low-strength steel, these Grade 5 nuts fasten most machinery and equipment. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
    Black Corrosion-Resistant-Coated Steel—Combines a finished appearance with the rust resistance of stainless steel. The coating has been tested to extreme standards, including 1,000 hours of salt spray resistance, to hold up in wet and outdoor environments. Also known as black luster.
    Thread
    Size
    Thread
    Dp.
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Pkg.
    Qty.
    Pkg.
    Black Corrosion-Resistant-Coated Steel
    1/4"-20
    1/4"7/16"15/32"SAE Grade 5
    100000000000000
    5/16"-18
    5/16"1/2"17/32"SAE Grade 5
    10000000000000
    3/8"-16
    3/8"9/16"5/8"SAE Grade 5
    10000000000000
    1/2"-13
    1/2"3/4"13/16"SAE Grade 5
    100000000000000
     
    High-Strength Steel
    Image of Product. Front orientation. Cap Nuts. Cap Nuts.
    Rated Grade 8 or Class 10, these nuts are about 25% stronger than medium-strength steel nuts. They are commonly used to fasten components in valves, pumps, motors, and other high-stress applications. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
    Black Corrosion-Resistant-Coated Steel—Combines a finished appearance with the rust resistance of stainless steel. The coating has been tested to extreme standards, including 1,000 hours of salt spray resistance, to hold up in wet and outdoor environments. Also known as black luster.
    Thread
    Size
    Thread
    Dp.
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    Pkg.
    Qty.
    Pkg.
    Black Corrosion-Resistant-Coated Steel
    1/4"-20
    1/4"7/16"15/32"SAE Grade 8
    100000000000000
    5/16"-18
    5/16"1/2"17/32"SAE Grade 8
    10000000000000
    3/8"-16
    3/8"9/16"5/8"SAE Grade 8
    10000000000000
    1/2"-13
    1/2"3/4"13/16"SAE Grade 8
    100000000000000
     
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