... .Size M0.8~M12Material Stainless, Steel,Brass, Steel,Bronze, Iron,Aluminum,Carbon steel,Alloy steel, silicon bronze,etc.Head/Tread styles According client ... from Taiwan area, and mainly produces forged fastener precise screws, which are made of titanium, copper, aluminum, iron, stainless steel and so ... us for future business relationships and achieving mutual success! certificate Brass insert nut