hexagon nut standard:DIN 934,936,555,6915,6923,IFID-6, ... , AS1112, AS2465, BSW 1083,916,ANSI 18.2.2,UNI5587,5588. 1)different types of hexagon nut2)standard:DIN 934,936,555,439 ... ,alloy steel,carbon steel6)package:bulk packing,small boxes,pocket. hexagon nut