... 9.8..... Hollow Bolt,Stainless Steel Hollow Bolt,Bolt with Internal Thread.1.What’s the specification of our Products ? ... FinishZinc plated,Nickel plated,Dacroment Plated,chromium plated,Tin plated,Black phosphating ,anodized ,Parkerising,and Environmental Plated is used in ... Europe,Asia,Western Europe .3)Service:OEM service offered,Design service offered.4)Make samples as per customer's ...