... Products Name:hexagon head cross recessed Screw with spring washer Brand Name:Li DaSize:M2.5-M24Length ... steel, Stainless Steel, Brass and etcGrade:4.8, 6.8 , 8.8, 10.9, 12.9 and etcSurface treatment:Cr3+ Zinc plated ... our factory aim to produce the Screw with spring washer ,so if you are interesting our products ... our reference if Non Standard screw with spring washer,and then we can quote you the best ...