standard size stud bolt Description Standard:ANSI,ASTM,JIS,DINGrade:Class 4.8 ... including bolts, nuts, screws,washers, anchors, rivets, pins and special fasteners made of low and medium carbon steel, alloy & ... our customers’ special request and drawings.We also specialized in lock nuts and taps / gages. Our Lock fastener can effectively ... you need fasteners, contact us ” standard size stud bolt