standard nut standard:DIN 934,936,555,6915,6923,IFID-6,D-8, ... 18.2.2,UNI5587,5588. 1)different types of standard nut2)standard:DIN 934,936,555,439,6915,6923,JIS,B1181 UNI5587 ... , black,H.D.G,ZINC,DACROMET5)material: stainless steel ,alloy steel,carbon steel6)package:bulk packing,small boxes,pocket. standard fastener nut