... . specification:M3 ,M4 ,M5, M6, M8 ,M10 ,M12, inch: 1/2,3/8,1/4,5/32 3/16,5/16 ... ,aluminium.ProductsMaterialFinish(plating)SizeStandardrivet nut1.steel 2.Stainless- Steel 3.aluminum 4.brass1.plain 2.yellow zinc white zinc color zinc 3 ... + plated (bule/bule white-white/color) provide different kinds1.ISO 2.GB 3.IFI 4.SP 5.DIN 6.JISinsert nuttubular nutrivetsthread ...