... fastener supply 2.ROHS is capable 3.Grade:4.8 ,6.8,8.8,9.8....... WASHER,STAINLESS STEEL WASHER,DIN 125 L PLAIN WASHER. A ... the specification of our Products ? MaterialsCarbon steel,Stainless steel,Alloy steel,Copper,Aluminum are available.Carton steel is high quality iron,such as ... 45#,10B21,1035,CH38F,1039,40ACR...Alloy steel are 35,40CrMo,SCM435,10B38...Stainless steel is SS201,202,302,304,316... ...