Spring Pin System of Measurement Inch Pin Diameter 1/8 in Pin Type Coiled Material Steel Material Grade/Class Grade 1070/Grade 1074 Finish Plain Usable Length 1/4 in End Type Chamfered Chamfer Diameter 0.121 in Fits Minimum Hole Diameter 1/8 in Fits Maximum Hole Diameter 1/8 in Shank Length 1/4 in Maximum Chamfer Length 0.044 in Nominal Diameter 1/8 in Standards ASME B18.8.2 Shank Length Tolerance +/-0.010 in Product Type Coiled Spring Pin Rockwell Hardness RC43-52