Precision Cold Heading Of A 4037 Steel Rail Pin

Looking for experts in precision cold heading who could save them money, a client in the hardware industry commissioned Acme Screw Corporation for this cold heading of a 4037 steel rail pin. The part had previously been made using a screw machine, and our methods proved significantly more cost effective. For the formed end, we upset the .375" diameter shank up to a .500" diameter mass. Then we flattened and trimmed it in a punch press operation, creating the customer's requested shapes while maintaining tolerances of +.000-.004". Finally, we drilled and tapped the steel rail pin, and finished with heat treating and zinc plating. The length of the final product was 5.000" and the O.D. measured Ø.375".