... 10MM/12.5MM/14MM/20MM(mm) Product Typebarrel nuts MaterialStainless steel, Carbon Steel, Aluminum alloy, Zinc ... Drilling, threading, stampling, punching etc..Surface finishPolishing, and Chrome plating, zinc plating, blackening, Nickel plating, ... to send your drawings (CAD) for quotation.We are looking forward to establishing long term cooperation with you! sell excellent quality barrel nuts in ...