... finished various of surface as per customer's requi Thread rods & DIN975/976 with Cr+3 zinc plated Product Description Detail ... :Thread rods and barsBolt Standard: DIN 975/976Material: ,Q235,SUS304,SUS316 etcSurface ... of finish is available, such as Zinc plate, plain finish, copper plate, nickel plate H.D.G chromium plate Dacrotized.. etcGrade ...