flat washers 1.Standard:ANSI,ASME,DIN,BS,NEF,JIS,GB ... :M3-M76 3.Finish:plain,zinc,black,nickel,chrome,etc flat washers1.Standard:ANSI,ASME,DIN,BS,NEF,JIS,GB2.Size ... .guaranteed quality:with more than ten years experience in producing flat washer,we try our best to improve our quality,and we ...