Here we offer a 3/4" x 1/2" in 1/8" thick, N52, rectangular block magnet with a hole for a #6 flathead screw to allow for easy fastening. Sold by the pair as our part number BC82CS-P-N52. One will have the north pole on the countersink side and one will have the south pole on the countersink side, so they will attract each other when they are screwed in place. Also available in grade N42, BC82CS-P
These countersunk block magnets can be used for a wide range of applications including door closures and tool hangers.