WASHER,STAINLESS STEEL 1.ISO,ANSI,JIS,DIN, ... .8,8.8,9.8....... WASHER,STAINLESS STEEL WASHER,DIN 125 L PLAIN WASHER. A good non-standard fastenerS manufacturer ... for your better choice .1.What’s the specification of our Products ? MaterialsCarbon steel,Stainless ... 40ACR...Alloy steel are 35,40CrMo,SCM435,10B38...Stainless steel is SS201,202,302,304,316... ...