Processing method for stainless steel high-strength bolt

The invention discloses a processing method for a stainless steel high-strength bolt. The method comprises blanking, lubricating, thermal heading, solution treatment, cooling, descaling, processing of diameter of a threaded rolled thread billet, aging treatment, polishing, rolling of a thread and an arc at the connection part of a head part and a rod, flaw detection, cleaning and passivating. According to the method, precipitation hardening stainless steel is taken as a part blank, the head part is formed in one step through thermal heading, the processing period is greatly shortened, the diameter of the thread billet is processed by a shortening rod, the thread is rolled after aging treatment, the use strength of a thread part of a product is improved, flaw detection is carried out after thread rolling, a cracked product resulting from procedures like thermal heading, thermal treatment and thread rolling is prevented from going to the procedures like assembly and use as well as rolling of the arc R below a bolt head, so as to improve the connection strength of the head part and the rod part of the product, the strength of the bolt is greatly enhanced, and the fabricated part has relatively strong impact toughness and yield strength.