... nut standard:DIN 934,936,555,6915,6923,IFID-6,D-8,D-14, AS1112, AS2465, BSW 1083,916,ANSI 18.2.2 ... ,936,555,439,6915,6923,JIS,B1181 UNI5587,IFID-6,D-8,D-14, ISO4032, 4033, 4034, AS1112, AS2465 B.S.1083,1768 ... -88 and so on. 3)class: 4,6,8,104)surface:plain, black,H.D.G,ZINC,DACROMET5)material: stainless steel ,alloy ...