Switched Mono 1/4" Enclosed Jack.
Mounts in an 11mm hole.
Includes two flat plastic washers to allow the jack to be assembled flush (or almost flush) against the inside panel. Using two washers decreases strain on the solder joints of the jack!
Similar, but not exactly the same as the Neutrik NMJ4HCD2 jack. The Love My Switches jack body width is 20mm vs 18.2mm for the Neutrik. Check the schematic for measurements.
1/4" mono jack - switched
Enclosed frame body with two washers and hexagonal nut