... bolt Description Standard:ANSI,ASTM,JIS,DINGrade:Class 4.8 / 5.8 / ... -M48 1/4''-2''Length:6mm-300mm 3/8''-12''Material:Carbon steel, Stainless steel ,Copper, Alloy SteelSurface:Plain, zinc ... , ANSI, AS, BS, JIS, GB, ISO and other standard&non-standard specifications base on our customers’ special request and drawings.We ... of our fasteners."Whenever you need fasteners, contact us ” standard size stud bolt