This 3-pole 1/4" D-series panel-mount connector from Neutrik protects from accidental disconnect via a locking mechanism. Standard A-gauge mono or stereo plugs will securely latch. Locking occurs automatically upon insert and release by pressing the red...

Seetronic SJP3C TRS 1/4" Locking Panel Mount Jack D Series Designed to panel mount into a standard D-series punch-out. The standard knockout for a D-series product is approximately 0.840" or 21.3mm. 27/32" will also work.   Would you like connectors...

Seetronic ST229L 1/4" Panel Mounted Jack - Mono

Seetronic ST230 1/4" Panel Mounted Jack - Stereo