U39000.250.0075-pk2 Taper Pin, Thread Size Not Applicable, Pin Size #4, Large End Diameter 0.251 in, Small End Diameter 0.234 in, Pin Type Standard, Product Type Taper Pin, Material Steel, Material Grade/Class Ungraded, Finish Plain, Usable Length Not Applicable, Small End Diameter Tolerance +0.01/-0.02 in, Shank Length 3/4 in, System of Measurement Inch, Usable Length Tolerance Not Applicable, Thread Type Not Applicable, Material Quality Standards Not Applicable, Dimensional Standards ASME B18.8.2 PK20