1.carbon steel

2.cold forming

3.DIN934,DIN6915,DIN6923,DIN985,DIN982,DIN928,DIN929,DINB439,DIN936,DIN935,DIN557,DIN552,BS1083,ISO4032,ISO4033,ISO4035,ANSI/ASME B18.2.2,ANSI/ASME B18.2.4.1M,ANSI/ASME B18.2.1,GB52,GB6170,AS1112,JIS1181, UNI5587, YJT 8965,YJT 0975

4.ISO,DIN,ANSI/ASME,BS,UNI,JIS,AS and GB,etc and non-Standard

5.Plain, Black Oxide, Zinc Plated (white, yellow, blue, color...), Hot Dip Galvanized, Dacromet,Geomet

6.Grade2,4,5,6,8,10,12,O,A,B,D,DH,2H,2HM,10S

7.Size range M3-M36;1/4"-1 1/2"