Fully threaded Hex Set Screw - A4 Grade Stainless Steel A4 grade stainless steel has a greater corrosion resistance than A2 in certain environments. It is often used for Marine applications especially when coming into direct contact with salt water Thread Pitch - 2.0 mm Where: e = point to point k = head thickness s = across flats l = thread length e - 26.75 mm (min) k - 10.1 mm (max) s - 24 mm l - 50 mm DIN933