Flat Washers, Spring Washer, Lock Washers, Non-standard Washers Washers: Din6901, DIN125, DIN127, F436, USS, ASME, and un-standard ones. It can be made by metal or plastic. Our entire range of fasteners are made of carbon steel, alloy&stainless steel, aluminum, brass, and other special materials. Production is carried out in compliance with din, ifi, ANSI/asme, bs, ISO, jis specifications Packing: G. W.:25kgs/carton in wooden package or small mail box according to customer inquire Surface treatment: Plain, black, zinc, hot dip galvanized, dacromat, elctro galvanized etc.