Spring Pin System of Measurement Inch Pin Diameter 3/8 in Pin Type Coiled Material Steel Material Grade/Class Grade 1070/Grade 1074 Finish Plain Usable Length 1 in End Type Chamfered Chamfer Diameter 0.3659 in Fits Minimum Hole Diameter 3/8 in Fits Maximum Hole Diameter 25/64 in Shank Length 1 in Maximum Chamfer Length 0.095 in Nominal Diameter 3/8 in Standards ASME B18.8.2 Shank Length Tolerance +/-0.010 in Product Type Coiled Spring Pin Rockwell Hardness RC43-52