Spring Pin System of Measurement Metric Pin Diameter 4 mm Pin Type Coiled Material Steel Material Grade/Class Ungraded Finish Plain Usable Length 16 mm End Type Chamfered Chamfer Diameter 3.9 mm Fits Minimum Hole Diameter 3.88 mm Fits Maximum Hole Diameter 4 mm Shank Length 16 mm Minimum Chamfer Length 1.1 mm Nominal Diameter 4 mm Standards D7343 ISO8750 Shank Length Tolerance +/-0.500 mm Product Type Spring Pin Rockwell Hardness HV30 420-560