Safety Pin System of Measurement Inch Wire Diameter 0.091 in Shank Length 1 5/8 in Pin Diameter 5/16 in Pin Type Snap Material Steel Material Grade/Class Grade 1010 Finish Zinc Plated Outside Diameter Tolerance +0.306/-0.311 in Shank Length Tolerance +0.000/-0.250 in Usable Length 1 3/8 in Product Type Safety Pin Wire Shape Round Wire Type Double Height 9/16 in Includes Not Applicable Material Quality Standards Not Applicable Dimensional Standards Not Applicable