Detailed Product Description 1)different types of hex nuts2)standard:DIN 934, ... ,6915,6923,B1181-1961 JIS,B1181 JIS,UNI5587,IFID-6,D-8,D-14,ISO4032,4033,4034,AS1112,B.S.1083,1768 ... . 3)class:4,6,8,10.4)surface:plain, black,H.D.G,ZINC ......5)material:carbon steel,stainless steel,brass,35 ...