TNC Jack, Sealed, for Small-Diameter Coax
The 122370-11: This is the bulkhead-mount version with a front-side nut, specced for RG-178, 178A, 178B, 196, 196A, and M17/93-RG178 cable groups — the small-diameter coax you see in tight-bend avionics, test leads, and portable radio harnesses. The threaded coupling gives a vibration-proof mate, and the IP67 rating means it seals dust-tight and waterproof when mated, so it holds up in outdoor antenna feeds, engine bay runs, or washdown zones on industrial gear.
What the 7-Piece Kit Covers
This order code ships as a complete assembly kit: the TNC jack body, one crimp contact, one ferrule, a gasket, a piece of heat shrink, a lockwasher, and the mounting nut. That means you don't chase separate line items for the seal or the hardware — it's all in the bag. The gasket and lockwasher are what make the IP67 seal at the panel face; the heat shrink goes over the crimp ferrule for strain relief and environmental protection on the cable entry side.
Crimp Termination and Cable Prep
The 500-cycle mating life is solid for a threaded RF connector; the gold-on-brass contact pair handles repeated connect-disconnect without fretting corrosion.
Operating Range and Environment
That temperature floor and ceiling, combined with the seal, makes it a fit for engine-mounted sensors, outdoor telecom enclosures, and military vehicle harnesses where the connector sees both cold soak and exhaust-side heat.
The closest peer in the same series is the 122392RP — same 50 Ohm impedance, same 11 GHz ceiling, same 500 mating cycles, same IP67 rating. The difference is gender and polarity: the 122370-11 is a standard TNC jack (female socket), while the 122392RP is an RP-TNC jack (male pin). If your cable assembly needs a male centre pin on the bulkhead side, the 122392RP is the one. Both use the same crimp termination and the same cable-group range, so tooling and prep are identical.