ARTICLE: STUD BOLT WITH NUTDIA.:1/2" ~ 4"; M12~M100LENGTH:2" ~ 235"; 50mm~6000mmMATERIAL/GRADE:ASTM A193/A193M B8 Class 1 & 2, B8M Class 1 & 2ASTM A320/A320M B8 Class 1 & 2, B8M Class 1 & 2ASTM A194/A194M 8, 8M