namer: stainless steel bolt material:carbon steel,stainless steel,alloys,copper,aluminum etc. certifiction: ISO9001:2008 name: ... , we provide black oxide, zinc electroplating, phosphate, copper plating, mechanical galvanization, hot dip galvanization, etc. Descripion ... Item nameStainless steel bolt Materials Brass, Bronze, Carton steel, Stainless steel, Aluminum ...