... ")Grade: 4.8/5.8/6.8/8.8/10.9/12.9(ANSI A307/2/5/8/A325)Standard: DIN,ANSI,UNI ... Grade: 4.8/5.8/6.8/8.8/10.9/12.9(ANSI A307/2/5/8/A325)Standard: DIN,ANSI,UNI ... Grade: 4.8/5.8/6.8/8.8/10.9/12.9(ANSI A307/2/5/8/A325)Standard: DIN,ANSI,UNI ... Diameter.: 3MM--72MM (1/4"---3")Grade: 6/8/10/12(ANSI 2/5/2H)Standard: DIN,ANSI,UNI,JIS,ISOincl ... Grade: 4.8/5.8/6.8/8.8/10.9/12.9(ANSI A307/2/5/8/A325)Standard:GB,ANSI,DIN ...