Spring Pin System of Measurement Inch Pin Diameter 1/2 in Pin Type Coiled Material Steel Material Grade/Class SAE 1070 Finish Plain Usable Length 2 1/4 in End Type Chamfered Chamfer Diameter 0.488 in Fits Minimum Hole Diameter 1/2 in Fits Maximum Hole Diameter 33/64 in Shank Length 2 1/4 in Maximum Chamfer Length 0.11 in Minimum Chamfer Length Not Applicable Nominal Diameter 1/2 in Standards ASME B18.8.2 Shank Length Tolerance +/-0.025 in Product Type Not Applicable