Cotter pins are used to anchor various assemblies by insertion into a drilled hole of a shaft or pin and spreading the points to hold the assembly in position

1/2-13 x 3 Hex Sleeve-All™ 304 SS (25)

7/8-9 x 8 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (45)

7/8-9 x 4 1/2 Socket Cap Screw Alloy

1/2-13 x 4 Hex Sleeve Anchor Zinc Plated (25)

9/16-18 x 4 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (25) 5/8-11 Socket Cap Screws 18-8 Stainless Steel Cotter pins are used to9 16 18 x 4 1 2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (25) . Grade 5 Hex Cap Screws are manufactured in the USA from medium carbon steel. Our Grade 5 material meets or exceeds SAE J429 Grade 5 specifications. All products are manufactured with rolled threads. Typical hardness on diameters 1 4 to 1 inch is HRC 25 34. On diameters over 1 inch to 1 1 2 hardness will range from HRC 19 30. Tensile strength for diameters 1 4 to 1 inch is a minimum