Cotter Pin System of Measurement Inch Pin Diameter 5/16 in Pin Type Extended Prong Material Steel Material Grade/Class Ungraded Finish Zinc Plated Usable Length 1 1/2 in Product Type Cotter Pin Shank Length 1 1/2 in Manufacturer Location Made in USA Standards ANSI B18.8.1 ASME B18.8.1 Package Quantity 250