Grooved Pin System of Measurement Inch Pin Diameter 5/16 in Large End Diameter 0.329 in Small End Diameter 0.313 in Shank Length 3/4 in Pin Type Type G Material Steel Material Grade/Class Grade 1215 Finish Zinc Plated Large End Diameter Tolerance +/-0.003 in Small End Diameter Tolerance +/-0.004 in Shank Length Tolerance +/-0.01 in Standards ASME B18.8.2 DIN 1469 Product Type Grooved Pin Manufacturer Location Made in USA Double Shear Strength 7 660 lb Rockwell Hardness B85