GB/T 5953.1-2009

This standard specifies the technical requirements, test methods, and inspection rules for steel wire intended for cold heading and cold forging processes that require subsequent heat treatment. It is applied in the manufacturing of fasteners such as bolts, screws, and nuts, as well as other mechanical components produced through cold forming in the automotive, aerospace, and general engineering industries. The standard ensures the wire's suitability for plastic deformation at room temperature and its ability to achieve desired mechanical properties after quenching and tempering.