This is a brand new blued side plate screw (flat top) for Smith & Wesson J, K, L, and N frame revolvers. This is the back side plate screw (only 1 required per side plate, the other two are yoke/endshake screws). Fits models: K-22, K-38 (Army 38/200, 38 S&W, Victory, & British), M&P, 1917, 10, 12, 13, 14, 15, 16, 17, 18, 19, 24, 25, 27, 28, 29, 48, 57, 581, 586, and maybe more!
We also sell a complete side plate set in our other auctions (1 side plate screw and 2 yoke screws) here.