Threaded Rods UNC, 2A, grade 2, grade 5, ASTM A193 B7 Finished:PL, Zinc plated,HDG,Dacromet zinc,Black oxide, Nickel Product Name ... : Threaded Rods-BZP-4.8 Material: Carbon steel, Stainless steel ... Surface treatment: PL, Zinc plated, HDG, Dacromet zinc, Black oxide, Nickel plated, Chrome plated, Cr+3, Brass plated Grade: 4.8 ...