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    63 Products

    Locknuts for use with Cotter Pins

    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.
    Thread Size
    Wd.
    Ht.
    Fastener Strength
    Grade/Class
    For Cotter
    Pin Dia.
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
    1/4"-20
    7/16"7/32"SAE Grade 5
    1/16"2597190A005000000
    1/4"-28
    7/16"7/32"SAE Grade 5
    1/16"1097190A1100000
    5/16"-18
    1/2"17/64"SAE Grade 5
    5/64"2597190A01000000
    3/8"-16
    9/16"21/64"SAE Grade 5
    7/64"2597190A01500000
    3/8"-24
    9/16"21/64"SAE Grade 5
    7/64"1097190A12000000
    7/16"-14
    11/16"3/8"SAE Grade 5
    7/64"2597190A02000000
    7/16"-20
    11/16"3/8"SAE Grade 5
    7/64"1097190A1300000
    1/2"-13
    3/4"7/16"SAE Grade 5
    7/64"1097190A0250000
    1/2"-20
    3/4"7/16"SAE Grade 5
    7/64"1097190A14000000
    9/16"-12
    7/8"31/64"SAE Grade 5
    9/64"1097190A15000000
    9/16"-18
    7/8"31/64"SAE Grade 5
    9/64"1097190A16000000
    5/8"-11
    15/16"35/64"SAE Grade 5
    5/32"1097190A03000000
    5/8"-18
    15/16"35/64"SAE Grade 5
    5/32"1097190A17000000
    3/4"-10
    1 1/8"41/64"SAE Grade 5
    5/32"597190A03500000
    3/4"-16
    1 1/8"41/64"SAE Grade 5
    5/32"597190A18000000
    7/8"-14
    1 5/16"49/64"SAE Grade 5
    3/16"197190A1900000
    1"-8
    1 1/2"55/64"SAE Grade 5
    3/16"197190A0400000
    1"-14
    1 1/2"55/64"SAE Grade 5
    3/16"197190A2100000
    1 1/4"-7
    1 7/8"1 3/32"SAE Grade 5
    5/16"197190A2200000
    1 1/4"-12
    1 7/8"1 3/32"SAE Grade 5
    5/16"197190A23000000
    M6 × 1 mm10 mm7.5 mmClass 8
    1.6 mmDIN 935593760A2120000
    M8 × 1.25 mm13 mm9.5 mmClass 8
    2 mmDIN 935593760A2220000
    M10 × 1.5 mm17 mm12 mmClass 8
    2.5 mmDIN 935593760A2330000
    M12 × 1.5 mm19 mm15 mmClass 8
    3.2 mmDIN 935593760A1260000
    M12 × 1.75 mm19 mm15 mmClass 8
    3.2 mmDIN 935593760A3170000
    M14 × 1.5 mm22 mm16 mmClass 8
    3.2 mmDIN 935193760A1270000
    M14 × 2 mm22 mm16 mmClass 8
    3.2 mmDIN 935193760A1110000
    M16 × 1.5 mm24 mm19 mmClass 8
    4 mmDIN 9351093760A12800000
    M16 × 2 mm24 mm19 mmClass 8
    4 mmDIN 935593760A32800000
    M18 × 2.5 mm27 mm21 mmClass 8
    4 mmDIN 935193760A1120000
    M20 × 2.5 mm30 mm22 mmClass 8
    4 mmDIN 935593760A33700000
    M24 × 2 mm36 mm27 mmClass 8
    5 mmDIN 935193760A12900000
    M24 × 3 mm36 mm27 mmClass 8
    5 mmDIN 935193760A3400000
    M27 × 3 mm41 mm30 mmClass 8
    5 mmDIN 935193760A11300000
    M30 × 3.5 mm46 mm33 mmClass 8
    6.3 mmDIN 935193760A11400000
     
    Low-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.
    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.
    Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
    Thread
    Size
    Wd.
    Ht.
    For Cotter
    Pin Dia.
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
    1/4"-20
    7/16"7/32"1/16"5095030A110000000
    1/4"-28
    7/16"7/32"1/16"5095030A12000000
    5/16"-18
    1/2"17/64"5/64"2595030A1300000
    5/16"-24
    1/2"17/64"5/64"2595030A1400000
    3/8"-16
    9/16"21/64"7/64"2595030A15000000
    3/8"-24
    9/16"21/64"7/64"2595030A16000000
    7/16"-14
    11/16"3/8"3/32"2595030A17000000
    7/16"-20
    11/16"3/8"3/32"2595030A18000000
    1/2"-13
    3/4"7/16"1/8"2595030A19000000
    1/2"-20
    3/4"7/16"1/8"2595030A21000000
    9/16"-12
    7/8"31/64"7/64"1095030A22000000
    9/16"-18
    7/8"31/64"7/64"595030A2300000
    5/8"-11
    15/16"35/64"5/32"1095030A2400000
    5/8"-18
    15/16"35/64"5/32"1095030A2500000
    3/4"-10
    1 1/8"21/32"5/32"1095030A26000000
    3/4"-16
    1 1/8"21/32"5/32"1095030A27000000
    7/8"-9
    1 5/16"3/4"5/32"595030A28000000
    7/8"-14
    1 5/16"3/4"5/32"595030A2900000
    1"-8
    1 1/2"55/64"3/16"595030A31000000
    1"-14
    1 1/2"55/64"3/16"595030A32000000
    1 1/4"-7
    1 7/8"1 3/32"9/32"195030A3500000
    1 1/4"-12
    1 7/8"1 1/16"9/32"195030A3600000
    1 1/2"-6
    2 1/4"1 5/16"5/16"195030A37000000
    1 1/2"-12
    2 1/4"1 5/16"5/16"195030A38000000
    1 3/4"-5
    2 5/8"1 1/2"3/8"195030A39000000
    1 3/4"-12
    2 5/8"1 1/2"3/8"195030A41000000
    2"-4 1/2
    3"1 23/32"3/8"195030A42000000
    2"-12
    3"1 23/32"3/8"195030A43000000
     
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