Hollow Bolt,Stainless 1.ISO,ANSI,CE,JIS,DIN,BS& non- ... :4.8 ,6.8,8.8,9.8..... Hollow Bolt,Stainless Steel Hollow Bolt,Bolt with Internal Thread.1.What’s the ... in our products,Hexavalent chromium are accord with ROHS Standard. Weight Packing for each carton will be 22kg -25kg ,and ... weight of each carton will be packing as per the customer' ...