... 2.ROHS is capable 3.Grade:4.8 ,6.8,8.8,9.8....... Bolt M10,Iron Bolt,Steel ... plated,Tin plated,Black phosphating ,anodized ,Parkerising,and Environmental Plated is used in our products,Hexavalent ... ,nut,washer,rivet, stud, pin,wrench and so on .2. Our company had good reputation with customers ... control6. Certificate:Provide dimensions report,chemical report and other testing report .Good service We can ...