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    194 Products

    Hairpin Cotter Pins
    3D CAD models available

    Secure components more quickly than standard cotter pins. One prong is already bent, so just push into a hole for installation in one step. Although hairpins are reusable, they don’t withstand vibration as well as standard and hammer-set cotter pins. Also known as hitch pin clips and R-clips.
    Steel
    Image of Product. Front orientation. Contains Annotated. Cotter Pins. Hairpin Cotter Pins.
    Zinc-Plated Spring Steel—These pins withstand occasional exposure to moisture. However, since friction from moving parts can wear away the finish, they're not ideal for wet environments. While not nearly as corrosion resistant as stainless steel, they are stronger and won’t deform under stress.
    Spring Steel—Stronger than stainless steel, these pins won't deform from stress and vibration. They perform best in dry environments since moisture will cause them to rust.
    For Clevis
    Pin Dia.
    Wire
    Dia.
    Eye
    Dia.
    Lg.
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Spring Steel
    1/16" to 1/8"3/64"1/8"1/2"__100000000000000000
    7/64" to 9/64"1/32"1/8"7/16"__10000000000000000
    1/8"1/32"1/8"5/8"__10000000000000000
    1/8" to 5/32"1/32"1/8"5/8"__250000000000000
    1/8" to 3/16"3/64"1/8"5/8"__1000000000000000
    3/16" to 1/4"3/64"1/8"3/4"__250000000000000
    3/16" to 1/4"3/64"1/4"15/16"__1000000000000000
    1/4" to 5/16"1/16"1/4"1 1/8"__1000000000000000
    1/4" to 3/8"3/64"1/8"7/8"__250000000000000
    1/4" to 3/8"3/64"1/4"1 5/8"__10000000000000000
    1/4" to 3/8"5/64"1/4"1 1/4"__500000000000000
    1/4" to 1/2"1/16"1/4"1 3/8"__10000000000000000
    1/4" to 1/2"3/32"3/8"1 5/8"__10000000000000000
    5/16" to 3/8"5/64"1/8"1 1/8"__250000000000000
    5/16" to 3/8"5/64"1/4"1 7/16"__10000000000000000
    5/16" to 3/8"3/32"3/8"1 5/8"__5000000000000000
    5/16" to 3/8"7/64"1/8"1 1/4"__250000000000000
    5/16" to 1/2"3/32"5/8"2"__250000000000000
    3/8" to 7/16"3/32"5/8"1 7/8"__10000000000000000
    3/8" to 1/2"1/16"3/8"1 5/8"__250000000000000
    3/8" to 1/2"5/64"3/8"1 5/8"__10000000000000000
    3/8" to 5/8"3/32"5/8"2 3/8"__10000000000000000
    7/16" to 3/4"1/8"1/2"2 5/8"__5000000000000000
    1/2" to 5/8"1/8"5/8"2 3/8"__5000000000000000
    1/2" to 3/4"3/32"1/2"2 1/2"__5000000000000000
    1/2" to 3/4"1/8"3/8"2"__5000000000000000
    1/2" to 3/4"1/8"1/2"1 5/8"__250000000000000
    5/8" to 3/4"9/64"3/4"2 9/16"__5000000000000000
    5/8" to 7/8"1/8"5/8"2 1/2"__5000000000000000
    5/8" to 1"9/64"3/4"3"__2500000000000000
    5/8" to 1"11/64"7/8"3 1/4"__2500000000000000
    3/4" to 1 1/16"11/64"7/8"3 1/2"__1000000000000000
    3/4" to 1 1/8"1/8"1"3 1/8"__2500000000000000
    3/4" to 1 1/8"9/64"3/4"3 3/8"__2500000000000000
    7/8" to 1"11/64"1"3 3/4"__2500000000000000
    7/8" to 1"5/16"7/8"4 1/8"__500000000000000
    7/8" to 1 1/16"5/32"7/8"2 1/4"__2500000000000000
    7/8" to 1 1/4"11/64"7/8"3 3/4"__2500000000000000
    1 1/8" to 1 1/2"15/64"1 1/8"5"__1000000000000000
    1 1/8" to 1 1/2"1/4"7/8"4"__1000000000000000
    6 mm to 11 mm2 mm10 mm57 mm__50000000000000
    9 mm to 14 mm2 mm10 mm57 mmDIN 11024100000000000000
    9 mm to 14 mm2.5 mm10 mm57 mm__50000000000000
    10 mm to 16 mm3 mm18 mm72 mmDIN 1102450000000000000
    10 mm to 16 mm3.5 mm18 mm81 mm__50000000000000
    16 mm to 20 mm4 mm20 mm74 mmDIN 1102450000000000000
    16 mm to 20 mm4 mm21 mm99 mm__50000000000000
    16 mm to 26 mm4.5 mm21 mm97 mm__100000000000000
    20 mm to 28 mm5 mm24 mm102 mm__500000000000000
    20 mm to 28 mm5 mm24 mm102 mmDIN 11024500000000000000
    28 mm to 40 mm6 mm24 mm122 mm__500000000000000
    28 mm to 40 mm6 mm30 mm126 mmDIN 1102410000000000000
    28 mm to 45 mm7 mm30 mm127 mm__10000000000000
    28 mm to 45 mm7 mm30 mm127 mmDIN 1102410000000000000
    30 mm to 45 mm8 mm28 mm132 mmDIN 1102410000000000000
    30 mm to 45 mm8 mm28 mm136 mm__10000000000000
     
    Spring Steel
    3/16" to 1/4"3/64"1/8"3/4"__250000000000000
    3/16" to 1/4"3/64"1/4"1"__250000000000000
    1/4" to 3/8"3/64"1/8"7/8"__250000000000000
    1/4" to 3/8"3/64"1/4"1 5/8"__10000000000000000
    1/4" to 3/8"5/64"1/4"1 1/4"__10000000000000000
    1/4" to 1/2"1/16"1/4"1 3/8"__10000000000000000
    1/4" to 1/2"3/32"3/8"1 5/8"__10000000000000000
    5/16" to 3/8"5/64"1/8"1 1/8"__250000000000000
    5/16" to 3/8"7/64"1/8"1 1/4"__250000000000000
    5/16" to 1/2"3/32"5/8"2"__250000000000000
    3/8" to 1/2"1/16"3/8"1 5/8"__250000000000000
    3/8" to 1/2"5/64"3/8"1 5/8"__10000000000000000
    3/8" to 5/8"3/32"5/8"2 3/8"__500000000000000
    7/16" to 3/4"1/8"1/2"2 5/8"__5000000000000000
    1/2" to 3/4"3/32"1/2"2 1/2"__5000000000000000
    1/2" to 3/4"1/8"3/8"2"__5000000000000000
    5/8" to 7/8"1/8"5/8"2 1/2"__250000000000000
    5/8" to 7/8"3/16"5/8"2 1/2"__10000000000000
    5/8" to 1"9/64"3/4"3"__250000000000000
    5/8" to 1"11/64"7/8"3 1/4"__2500000000000000
    3/4" to 1"1/4"7/8"4"__1000000000000000
    3/4" to 1 1/16"11/64"7/8"3 1/2"__100000000000000
    3/4" to 1 1/8"9/64"3/4"3 3/8"__2500000000000000
    7/8" to 1"5/16"7/8"4 1/8"__500000000000000
    7/8" to 1 1/16"5/32"7/8"2 1/4"__2500000000000000
    7/8" to 1 1/4"11/64"7/8"3 3/4"__2500000000000000
    1 1/4" to 1 1/2"1/4"1 1/2"5 1/8"__500000000000000
     
    Corrosion-Resistant Stainless Steel
    Image of Product. Front orientation. Contains Annotated. Cotter Pins. Hairpin Cotter Pins.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these pins resist rusting. They are strong enough to join most components but won't withstand extreme stress and vibration as well as steel.
    Super-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these pins won't degrade when exposed to harsh weather, salt water, and most chemicals. They're strong enough to join most components but won't withstand extreme stress and vibration as well as steel.
    For Clevis
    Pin Dia.
    Wire
    Dia.
    Eye
    Dia.
    Lg.
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    1/16" to 1/8"3/64"1/8"1/2"__100000000000000000
    7/64" to 9/64"1/32"1/8"7/16"__10000000000000000
    1/8"1/32"1/8"5/8"__1000000000000000
    1/8" to 3/16"3/64"1/8"5/8"__5000000000000000
    3/16" to 1/4"3/64"1/8"3/4"__2500000000000000
    3/16" to 1/4"3/64"1/4"15/16"__1000000000000000
    1/4" to 5/16"1/16"1/4"1 1/8"__10000000000000000
    1/4" to 3/8"3/64"1/4"1 5/8"__2500000000000000
    1/4" to 3/8"5/64"1/4"1 1/4"__2500000000000000
    1/4" to 1/2"1/16"1/4"1 3/8"__2500000000000000
    1/4" to 1/2"3/32"3/8"1 5/8"__2500000000000000
    5/16" to 3/8"5/64"1/8"1 1/8"__2500000000000000
    5/16" to 3/8"5/64"1/4"1 7/16"__5000000000000000
    5/16" to 3/8"3/32"3/8"1 5/8"__2500000000000000
    5/16" to 3/8"7/64"1/8"1 1/4"__1000000000000000
    5/16" to 1/2"3/32"5/8"2"__1000000000000000
    3/8" to 7/16"3/32"5/8"1 7/8"__2500000000000000
    3/8" to 1/2"1/16"3/8"1 5/8"__1000000000000000
    3/8" to 1/2"5/64"3/8"1 5/8"__2500000000000000
    3/8" to 5/8"3/32"5/8"2 3/8"__2500000000000000
    7/16" to 3/4"1/8"1/2"2 5/8"__1000000000000000
    1/2" to 5/8"1/8"5/8"2 3/8"__1000000000000000
    1/2" to 3/4"3/32"1/2"2 1/2"__2500000000000000
    1/2" to 3/4"1/8"3/8"2"__100000000000000
    1/2" to 3/4"1/8"1/2"1 5/8"__1000000000000000
    5/8" to 3/4"9/64"3/4"2 9/16"__1000000000000000
    5/8" to 7/8"1/8"5/8"2 1/2"__1000000000000000
    5/8" to 7/8"3/16"5/8"2 5/8"__10000000000000
    5/8" to 1"9/64"3/4"3"__500000000000000
    5/8" to 1"11/64"7/8"3 1/4"__500000000000000
    3/4" to 1"1/4"7/8"4"__10000000000000
    3/4" to 1 1/16"11/64"7/8"3 1/2"__10000000000000
    3/4" to 1 1/8"1/8"5/8"2 7/8"__500000000000000
    3/4" to 1 1/8"1/8"1"3 1/8"__500000000000000
    3/4" to 1 1/8"9/64"3/4"3 3/8"__1000000000000000
    7/8" to 1"11/64"1"3 3/4"__500000000000000
    7/8" to 1 1/4"11/64"7/8"3 3/4"__10000000000000
    1 1/4" to 1 1/2"1/4"1 1/2"5 1/8"__100000000000000
    9 mm to 14 mm2 mm10 mm57 mmDIN 1102410000000000000
    10 mm to 16 mm3 mm18 mm72 mmDIN 1102410000000000000
    16 mm to 20 mm4 mm20 mm74 mmDIN 1102410000000000000
    20 mm to 28 mm5 mm24 mm102 mmDIN 11024100000000000000
    28 mm to 40 mm6 mm30 mm126 mmDIN 11024100000000000000
     
    Super-Corrosion-Resistant 316 Stainless Steel
    1/16" to 1/8"3/64"1/8"1/2"__250000000000000
    7/64" to 9/64"1/32"1/8"7/16"__250000000000000
    1/8" to 5/32"1/32"1/8"5/8"__2500000000000000
    1/8" to 3/16"3/64"1/8"5/8"__2500000000000000
    3/16" to 1/4"3/64"1/4"1"__2500000000000000
    1/4" to 3/8"3/64"1/4"1 5/8"__2500000000000000
    1/4" to 3/8"5/64"1/4"1 1/4"__2500000000000000
    1/4" to 1/2"1/16"1/4"1 3/8"__2500000000000000
    1/4" to 1/2"3/32"3/8"1 5/8"__2500000000000000
    3/8" to 1/2"1/16"3/8"1 5/8"__500000000000000
    3/8" to 1/2"5/64"3/8"1 5/8"__2500000000000000
    3/8" to 5/8"3/32"5/8"2 3/8"__2500000000000000
    7/16" to 3/4"1/8"1/2"2 5/8"__1000000000000000
    1/2" to 3/4"3/32"1/2"2 1/2"__1000000000000000
    1/2" to 3/4"1/8"3/8"2"__1000000000000000
    5/8" to 7/8"1/8"5/8"2 1/2"__1000000000000000
    5/8" to 7/8"3/16"5/8"2 1/2"__10000000000000
    5/8" to 1"11/64"7/8"3 1/4"__500000000000000
    3/4" to 1 1/16"11/64"7/8"3 1/2"__10000000000000
    3/4" to 1 1/8"9/64"3/4"3 3/8"__500000000000000
    7/8" to 1"11/64"1"3 3/4"__500000000000000
    7/8" to 1 1/16"5/32"7/8"2 1/4"__10000000000000
    1 1/8" to 1 1/2"1/4"7/8"4"__10000000000000
    1 1/4" to 1 1/2"1/4"1 1/2"5 1/8"__100000000000000
    9 mm to 14 mm2 mm10 mm48 mmDIN 1102410000000000000
    9 mm to 15 mm2.5 mm10 mm53 mmDIN 1102410000000000000
    10 mm to 16 mm3 mm18 mm70 mmDIN 11024100000000000000
    16 mm to 20 mm4 mm20 mm76 mmDIN 11024100000000000000
    20 mm to 28 mm5 mm24 mm100 mmDIN 11024100000000000000
    28 mm to 40 mm6 mm30 mm125 mmDIN 11024100000000000000
     

    Long-Life Hairpin Cotter Pins
    3D CAD models available

    You can use these pins over and over without reducing their hold, and they're quicker to install than standard cotter pins. One prong is already bent, so just push into a hole to secure parts in one step. Although the coil maintains tension, hairpins don’t withstand vibration as well as standard and hammer-set cotter pins. Also known as hitch pin clips and R-clips.
    Steel
    Image of Product. Front orientation. Contains Annotated. Cotter Pins. Long-Life Hairpin Cotter Pins.
    Zinc-Plated Spring Steel—These pins withstand occasional exposure to moisture. However, since friction from moving parts can wear away the finish, they're not ideal for wet environments. While not nearly as corrosion resistant as stainless steel, they are stronger and won’t deform under stress.
    Spring Steel—Stronger than stainless steel, these pins won't deform from stress and vibration. They perform best in dry environments since moisture will cause them to rust.
    For Clevis
    Pin Dia.
    Wire
    Dia.
    Eye
    Dia.
    Lg.
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Spring Steel
    5/16" to 1/2"5/64"3/8"2 1/4"25000000000000000
    1/2" to 3/4"1/8"5/8"2 7/8"100000000000000
    1/2" to 7/8"9/64"3/4"3 1/8"1000000000000000
    5/8" to 1"5/32"7/8"3 3/4"1000000000000000
    5/8" to 1"3/16"1 1/8"4 1/8"1000000000000000
    1" to 1 9/16"19/64"1 3/8"6 3/4"10000000000000
    8 mm to 14 mm2 mm11 mm56 mm10000000000000
    14 mm to 20 mm3 mm17 mm73 mm10000000000000
    17 mm to 24 mm4 mm26 mm94 mm10000000000000
    18 mm to 30 mm5 mm27 mm110 mm10000000000000
    24 mm to 36 mm6 mm32 mm142 mm10000000000000
    26 mm to 40 mm7 mm31 mm152 mm10000000000000
     
    Spring Steel
    5/16" to 1/2"5/64"3/8"2 1/4"2500000000000000
    1/2" to 3/4"1/8"5/8"2 7/8"100000000000000
    1/2" to 7/8"5/32"3/4"3 1/8"100000000000000
    5/8" to 1"5/32"7/8"3 3/4"100000000000000
    5/8" to 1"3/16"1 1/8"4 1/8"1000000000000000
    1" to 1 9/16"19/64"1 3/8"6 3/4"10000000000000
     
    Corrosion-Resistant Stainless Steel
    Image of Product. Front orientation. Contains Annotated. Cotter Pins. Long-Life Hairpin Cotter Pins.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these pins resist rusting. They are strong enough to join most components but won't withstand extreme stress and vibration as well as steel.
    Super-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these pins won't degrade when exposed to harsh weather, salt water, and most chemicals. They're strong enough to join most components but won't withstand extreme stress and vibration as well as steel.
    For Clevis
    Pin Dia.
    Wire
    Dia.
    Eye
    Dia.
    Lg.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    5/16" to 1/2"5/64"3/8"2 1/4"5000000000000000
    1/2" to 3/4"1/8"5/8"2 7/8"500000000000000
    1/2" to 7/8"9/64"3/4"3 1/8"500000000000000
    5/8" to 1"5/32"7/8"3 3/4"10000000000000
    5/8" to 1"3/16"1 1/8"4 1/8"10000000000000
    1" to 1 9/16"19/64"1 3/8"6 3/4"100000000000000
    8 mm to 14 mm2 mm11 mm56 mm10000000000000
    14 mm to 20 mm3 mm17 mm73 mm10000000000000
    17 mm to 24 mm4 mm26 mm94 mm10000000000000
    24 mm to 36 mm6 mm32 mm142 mm100000000000000
     
    Super-Corrosion-Resistant 316 Stainless Steel
    5/16" to 1/2"5/64"3/8"2 1/4"500000000000000
    1/2" to 3/4"1/8"5/8"2 7/8"10000000000000
    1/2" to 7/8"5/32"3/4"3 1/8"10000000000000
    5/8" to 1"5/32"7/8"3 3/4"10000000000000
    5/8" to 1"3/16"1 1/8"4 1/8"10000000000000
    1" to 1 9/16"19/64"1 3/8"6 3/4"100000000000000
     

    Hairpin Cotter Pin Assortments

    Image of Product. Front orientation. Cotter Pins. Hairpin Cotter Pin Assortments.
    Image of Product. Front orientation. ZoomedIn view. Cotter Pins. Hairpin Cotter Pin Assortments.
    These pins come in a range of sizes to fit various clevis pin diameters, and you can install them in a single step. One prong is already bent, so just push them into a hole and pins stay in place to secure components. Although hairpins are reusable, they don’t withstand vibration as well as standard cotter pins. Also known as hitch pin clips and R-clips.
    Zinc-Plated Spring Steel—These pins withstand occasional exposure to moisture. However, since friction from moving parts can wear away the finish, they're not ideal for wet environments. While not nearly as corrosion resistant as stainless steel, they are stronger and won’t deform under stress.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these pins resist rusting. They are strong enough to join most components but won't withstand extreme stress and vibration as well as steel.
    Sizes Included
    No. of
    Pieces
    Container
    Type
    Each
    Zinc-Plated Spring Steel
    For 1/8" to 1 1/2" Clevis Pin Diameter74Plastic Box000000000000000
    For 1/8" to 7/16" Clevis Pin Dia.50Plastic Box00000000000000
    For 3/16" to 1" Clevis Pin Dia.130Plastic Box00000000000000
     
    18-8 Stainless Steel
    For 1/8" to 7/16" Clevis Pin Dia.50Plastic Box00000000000000
     
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