Long Threaded Barrel Input Jack, Stereo, Gold, Switchcraft, with Nut and Washer. Accepts 1/4" plug, and can be wired mono or stereo. 1/2"-diameter mounting hole,needed and at least 7/16" wood thickness are required for mounting. Overall length 2".
Switchcraft Stereo 1/4 in. Jack - Gold - Allparts EP-0152-002