| 摘要 |
<p>A method for producing a wrench socket includes forging a metal blank to form a socket (10). An end portion (101) of the socket includes an engaging hole (11) for coupling with a wrench and an outer circumferential wall surrounding the engaging hole. A support rod portion (90) is inserted into the engaging hole of the socket. The support rod portion received in the engaging hole has a shape corresponding to that of the engaging hole. The outer peripheral surface of the end portion of the socket is pressed to form size indicia on the outer peripheral surface of the end portion of the socket. Surface treatment is carried out on the socket after the support rod portion is removed from the engaging hole of the socket.</p> |
