Spring Pin System of Measurement Metric Pin Diameter 4 mm Pin Type Coiled Material Steel Material Grade/Class SAE 1070 Finish Plain End Type Chamfered Chamfer Diameter 3.9 mm Fits Minimum Hole Diameter 3.88 mm Fits Maximum Hole Diameter 4 mm Shank Length 20 mm Maximum Chamfer Length Not Applicable Minimum Chamfer Length 1.1 mm Nominal Diameter 4 mm Standards D7344 ISO8748 Shank Length Tolerance +/-0.500 mm Product Type Not Applicable Outside Diameter Tolerance Max 4.4 Min 4.2