namer: stainless steel bolt material:carbon steel,stainless steel,alloys,copper,aluminum etc ... Truss, Button, PF, Pan washer, Cheese, Countersunk, Fillister, hexagon, Hexagon washer head, Hexagon socket button head and etc. 3. by type of ... mechanical galvanization, hot dip galvanization, etc. Descripion Item nameStainless steel bolt Materials Brass, Bronze, Carton steel, Stainless steel, Aluminum alloy ...