J.W. Winco 50.1-SC-6 Retaining Magnet Assembly, GN50.1, Disc Shaped Without Thread, 0.24" Diameter, 0.18" Thickness, Steel Zinc Plated Housing, Samarium and Cobalt Combination SmCo Magnet (SC Type)
GN 50.1 magnets are a shielded magnetic assembly. Mount in place with glue or with a side-mounted side screw (for example, GN 913.2 grub screw with pointed nose).