Snap Pin System of Measurement Inch Wire Diameter Not Applicable Shank Length 2 1/2 in Pin Diameter 5/16 in Pin Type Snap Material Steel Material Grade/Class Ungraded Finish Zinc Plated Outside Diameter Tolerance +0.311/-0.306 in Shank Length Tolerance Not Applicable Usable Length 2 1/4 in Product Type Safety Pin Wire Shape Round Wire Type Double Height 1 3/4 in Pack Size Small Pack Properties Corrosion Resistant