... .8,9.8.. Non Standard Bolts,Non Standard Hardware,USA Bolts And Nuts.1.What’s the specification of ... 302,304,316...copper is shiny brass , pure copper,such as H62,H65,H68...Aluminum is ... plated,Tin plated,Black phosphating ,anodized ,Parkerising,and Environmental Plated is used in our products, ... control6. Certificate:Provide dimensions report,chemical report and other testing report .Good service We can ...