WASHER,LOCK WASHER 1.ISO,ANSI,JIS,DIN,BS& non-standard fastener supply 2.ROHS is capable 3.Grade:4.8 ,6.8,8.8,9.8........... WASHER,LOCK WASHER ,TYPES OF LOCK WASHERS. A good non-standard fastenerS manufacturer for your better choice .1.What’s the specification of our Products ? MaterialsCarbon steel,Stainless steel,Alloy steel,Copper,Aluminum are available.Carton steel is high quality iron,such ...