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.
Unit of Measure

Specifications

Type

N/A Coiled

Thickness (Decimal)

N/A 0.031 in

Length (Decimal)

N/A 0.375 to 1.500 in

Length (Fractional)

N/A 3/8 to 1-1/2 in

Maximum Hole Diameter

N/A 0.129 in

Minimum Hole Diameter

N/A 0.125 in

Nominal Pin Size (Decimal)

N/A 0.125 in

Nominal Pin Size (Fractional)

N/A 1/8 in

Chamfer Diameter

N/A 0.121 in

Chamfer Length

N/A 0.044 in

Maximum Head Diameter

N/A 0.189 in

Minimum Head Diameter

N/A 0.166 in

Maximum Pin Diameter

N/A 0.138 in

Minimum Pin Diameter

N/A 0.131 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

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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