... /316 , Brass, Copper size:M2.5~M36 thickness:0.7~9.2mm Carbon Steel Flat Washer DIN9021Material :Carbon steel , Stainless steel , Brass ... plated , black oxide...Size: M2.5~M36, Thickness ; 0.7mm~9.2mm.standard: DIN , ISO , ANSI, ASME , JIS, BS, GB...Packing: Inner ...