... Steel,Alloy steel,stainless steel and brass4.Grade4.6.8.10 etc5.FinishBlack,Zinc plated,Copper plating,Phosphating,Mechanical ... Washers: flat washers, spring washers, lock washers, structural Washers. square washer, bowl washer.Screws: machine screws, self tapping screws, ... We deliver over 100 containers of our products per month / 1200 containers per year by ship to our customers across the world. ...