We are a large hex bolts and nuts  manufacturer with capacity of over 200MT per day.Range size: (1)Hex. BoltsDiameter.: M6~M56(1/4~2")Length:    500mm max.(3/8"~20")Grade:    4.8/5.8/6.8/8.8/10.9/12.9(ANSI A307/2/5/8/A325)Standard:  DIN,ANSI,UNI,JIS,ISODIN931/933/601/960/961/6921,  ANSI/ASME B 18.2.1, ISO4014/4017(2).HEX SOCKET CAP SCREWS (ALLEN BOLTS).Diamete.: M6~M56(1/4~2")Length:    500mm max.(3/8"~20")Grade:    4.8/5.8/6.8/8.8/10.9/12.9(ANSI A307/2/5/8/A325)Standard:  DIN,ANSI,UNI,JIS,ISOincl.DIN912,  ISO4762(3) Carriage Bolts:Diamete.: 5MM--20MM  (1/4"---3/4")Length:    10MM--500MM .(3/8"~20")Grade:    4.8/5.8/6.8/8.8/10.9/12.9(ANSI A307/2/5/8/A325)Standard:  DIN,ANSI,UNI,JIS,ISOincl.DIN603, ANSI/ASME 18.5, ISO8677(4)Hex. Nuts:Diameter.: 3MM--72MM  (1/4"---3")Grade:    6/8/10/12(ANSI 2/5/2H)Standard:  DIN,ANSI,UNI,JIS,ISOincl.DIN934/439/6923,DIN985/986/982,ANSI18.2.2, BS1083,ISO4032/4035(5)Threaded rods:Diameter.:M3~M45(1/4~2")Grade: 4.8/5.8/6.8/8.8/10.9/12.9(ANSI A307/2/5/8/A325)Standard:GB,ANSI,DIN,UNI,JIS,ISO