... plated,black finishedDIN:976Matrerial : Steel, Stainless Steel, Brass,Aluminum and so on;Grade:Grade 4.8,5.8,8 ... /16"-2"Threaded rod. The product materials have carbon steel,alloy steel,stainless steel,brass and aluminum,the surface treatments ... have blacked,zinc,copper,hot dip zinc,mechanical plated.Years of threaded rod export experience make our threaded rod ...