Spring Pin System of Measurement Inch Pin Diameter 1/4 in Pin Type Coiled Material Steel Material Grade/Class Ungraded Finish Plain Usable Length 2 1/2 in End Type Chamfered Chamfer Diameter 0.243 in Fits Minimum Hole Diameter 1/4 in Fits Maximum Hole Diameter 1/4 in Shank Length 2 1/2 in Maximum Chamfer Length 0.065 in Nominal Diameter 1/4 in Standards ASME B18.8.2 Shank Length Tolerance +/-0.025 in Product Type Spring Pin Outside Diameter Tolerance +/-0.010 in