Safety Pin System of Measurement Inch Wire Diameter 0.177 in Shank Length 7 11/32 in Pin Diameter 3/4 in Pin Type Snap Material Steel Material Grade/Class Grade 1018 Finish Zinc Plated Outside Diameter Tolerance +0.741/-0.746 in Shank Length Tolerance +0.125/-0.000 in Usable Length 6 in Product Type Safety Pin Wire Shape Square Wire Type Single Height 1 3/4 in Includes Not Applicable Material Quality Standards Not Applicable Dimensional Standards Not Applicable