Spirol® Headed Coiled Pins are designed with a unique 2-1/4 coil, allowing them to compress evenly and distribute stress equally. They compress from the outer edge inward, so force direction does not reduce flexibility or shear strength - as loads are applied from any direction, these pins compress into a solid tube.
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Spirol® Headed Coiled Pins

Spirol® 0.016 Inch (in) Thickness Headed Coiled Pin
Spirol® Headed Coiled Pins

Spirol® 0.016 Inch (in) Thickness Headed Coiled Pin
Spirol® Headed Coiled Pins

Spirol® 0.031 Inch (in) Thickness Headed Coiled Pin
Spirol® Headed Coiled Pins

Spirol® 0.031 Inch (in) Thickness Headed Coiled Pin
Spirol® Headed Coiled Pins

Spirol® 0.047 Inch (in) Thickness Headed Coiled Pin
Description N/A Spirol® Headed Coiled Pins are designed with a unique 2-1/4 coil, allowing them to compress evenly and distribute stress equally. They compress from the outer edge inward, so force direction does not reduce flexibility or shear strength - as loads are applied from any direction, these pins compress into a solid tube.
Type N/A Coiled
Thickness (Decimal) N/A 0.016 in N/A 0.016 in N/A 0.031 in N/A 0.031 in N/A 0.047 in
Length (Decimal) N/A 0.187 to 0.750 in N/A 0.250 to 0.875 in N/A 0.312 to 1.000 in N/A 0.375 to 1.500 in N/A 0.437 to 1.750 in
Length (Fractional) N/A 3/16 to 3/4 in N/A 1/4 to 7/8 in N/A 5/16 to 1 in N/A 3/8 to 1-1/2 in N/A 7/16 to 1-3/4 in
Maximum Hole Diameter N/A 0.065 in N/A 0.081 in N/A 0.097 in N/A 0.129 in N/A 0.16 in
Minimum Hole Diameter N/A 0.062 in N/A 0.078 in N/A 0.094 in N/A 0.125 in N/A 0.156 in
Nominal Pin Size (Decimal) N/A 0.062 in N/A 0.078 in N/A 0.094 in N/A 0.125 in N/A 0.156 in
Nominal Pin Size (Fractional) N/A 1/16 in N/A 5/64 in N/A 3/32 in N/A 1/8 in N/A 5/32 in
Chamfer Diameter N/A 0.059 in N/A 0.075 in N/A 0.091 in N/A 0.121 in N/A 0.152 in
Chamfer Length N/A 0.028 in N/A 0.032 in N/A 0.038 in N/A 0.044 in N/A 0.048 in
Maximum Head Diameter N/A 0.099 in N/A 0.122 in N/A 0.144 in N/A 0.189 in N/A 0.234 in
Minimum Head Diameter N/A 0.084 in N/A 0.105 in N/A 0.125 in N/A 0.166 in N/A 0.207 in
Maximum Pin Diameter N/A 0.072 in N/A 0.088 in N/A 0.105 in N/A 0.138 in N/A 0.171 in
Minimum Pin Diameter N/A 0.067 in N/A 0.083 in N/A 0.099 in N/A 0.131 in N/A 0.163 in
Material N/A Chrome Stainless Steel SAE 51420, HV: 460 to 590 High Carbon Steel SAE 1070-1095/CS 70, HV: 420 to 545 Nickel Stainless Steel SAE 30302/30304, HV: Work Hardened
Finish N/A Passivated Oiled Phosphate Coated Plain Oiled Zinc plated
Features and Benefits N/A The applications for Spirol® Headed Coiled Pins are those normally associated with studs. These pins are also used as spring retainers--as anchors for tension springs and as cores for compression springs.
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