Here our competitive products as following:
1.flat washers
standard :DIN,ASTM,BS,NF,ISO ,JIS...ETC ,
Size :M1.6-M56, SAE NO.4 - SAE 3"
thickness :0.5mm-10mm
material: stainless teel ,carbon steel , Cu
Surface treatment: ZINC PLATED ,YELLOW ZINC PLATED ,BLACK ,HDG.....