Fasteners 1)Hex nut: M2 to M64 2)Hex bolt: M6 to M48 3)Material: mild steel,35C,45C, ss304-316, brass 4)DIN934,ANSI B18.2 Fasteners1)Material: Carton steel,Stainless steel,alloy,aluminium,brass and so on.2)Available varieties3)have hexagonal bolts and screws4)flat and spring lock washers Fasteners