... Strength Yield Strength Elongation Reduction of Area Hardness High Tensile Screw 120,000psi(min) 92,000psi(min) 14%(min) 35%( ... >18% Type Ss series Screw, Sleeper Screw with Washer, Sleeper screw 3V, High Tension Screw Spike, Coach Screw, DHS35 Rail Screw Spike, Stud Screw Spike Standard UIC864-1 ... TD16 Grade 4.6, 5.6, 8.8 Surface Plain with anti-rust oil, Bluing (Black Oxide), Painting, Zinc Plating ...