This is an ORIGINAL trigger spring screw (Sear spring) - that fits the Winchester 1866, 1873, 1886, 1894, 1892, models 53, and 65. Also the 1890 1906 62 and 62A pump .22. This screw either goes through only the trigger spring (part 614A,706, wp24a, wp24b, or 616b) and screws into the lower tang. New screws are part number wp50