... bolt Description Standard:ANSI,ASTM,JIS,DINGrade:Class 4.8 / 5 ... Our main markets including Europe, America, South America,Canada, Australia, Middle East ,Southeast Asia, etc.Our main products including ... , AS, BS, JIS, GB, ISO and other standard&non-standard specifications base on our customers’ special request and drawings. ... fasteners."Whenever you need fasteners, contact us ” standard size stud bolt