4012BC, 5/8-11" x 24", Galvanized, Threaded Rod, Designed For Hanging, Connecting, Clamping & Supporting In Plumbing, Heating & Electrical Applications & Marine Projects, Consists Of UNC Coarse Threads, Can Be Drilled, Cut, Heated, Shaped, Meets ASTM A307 Grade A, Meets ASTM A153, Corrosion Resistant Galvanized Finish.