Cotter Pin System of Measurement Inch Pin Diameter 1/16 in Pin Type Bridge Material Steel Material Grade/Class Ungraded Finish Zinc Plated Usable Length 1 5/16 in Product Type Cotter Pin Shank Length 1 5/16 in Fits Maximum Shaft Diameter 1/2 in Fits Minimum Shaft Diameter 1/4 in Manufacturer Location Made in USA Standards ANSI B18.8.1 ASME B18.8.1 Package Quantity 25