... 1.Material:Carbon steel,stainless steel 2.Surface:Plain,Black,Zinc,HDG 3.Packing:Bulk,DIY Packing THREAD ROD1.Material: ... your requirement 4.Coating: Plain, Black, Yellow Zinc, Blue Zinc, HDG, Nickel, Dacromet Zinc, Mechanical Galvanized 5.Packing: Bundle package with pallets ... used in circumstances requiring headed bolts.We also supply thread bar,thread bolt,thread stud ,stainless steel thread rod.with ...