1/4 Output Jack, Stereo, Switchcraft #12B, with nut and washer. A stereo output jack is used for stereo wiring, or to turn on/off onboard active systems when the plug is inserted. Requires 3/8"-diameter mounting hole; 3/8 x 32 threaded portion is 3/8" long.
The industry standard in jacks. Not much else to say.
By Steve Doner from on 12/24/2013
Probably... but for a good, solid jack that is pretty much maintenance free for only $2... well you tell me.