30-700A - 4 conductor 3.5mm chassis mount stereo audio & video jack.
TRRS = Tip, ring 1, ring 2, sleeve. TRRS connectors are used on Apple and Sony headphones that have stereo audio and microphone. Note that the Apple and Sony headphones may have a different pin-out assignment on the TRRS connectors; make sure you know the pin-out if you plan on using this connector.
Mounts in .28" hole.
This is an ideal jack for mounting on panels and wall-plates. It is a solder style connector so make sure you have the skills.