Product Overview
General RF Fittings TM-Series 50-Ohm Coaxial Panel Receptacle
Condition
Unused new old stock (NOS). Body collar is stamped GRFF 3031 6947. Complete with panel-mount hex nut, lock washer, sealing O-ring, gold-plated contact pin, PTFE insulator washer, compression ferrule, and silicone boot.
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Product Overview
Manufactured by General RF Fittings, a division of Solitron Devices, the GRFF-3031-6947 is a Type TM miniature threaded RF coaxial bulkhead jack. The Type TM interface was engineered for high-reliability aerospace, defense, and instrumentation setups requiring a rugged threaded coupling scaled down from standard TNC dimensions.
This panel-mount female connector features a threaded rear barrel for secure chassis installation, sealed interface mating, and a matched 50-ohm characteristic impedance. The assembly includes rear cable-termination hardware with a gold-plated socket contact, PTFE dielectric, metal ferrule, and weather-sealing boot.
Key Features
- Type TM miniature threaded coaxial jack interface
- 50-ohm nominal characteristic impedance
- Bulkhead front-panel mounting with threaded barrel, hex nut, and lock washer
- Red elastomeric O-ring for environmental panel sealing
- Gold-plated female contact pin for low contact resistance and corrosion resistance
- PTFE internal dielectric insulator
- Rear cable entry kit with compression ferrule and silicone boot
- Collar stamped GRFF 3031 6947
Applications
- Restoring or servicing legacy aerospace telemetry and avionics gear utilizing Type TM connections
- Maintaining vintage Solitron and General RF coaxial test equipment and laboratory patch panels
- Panel-building custom amateur radio transmitters or microwave bench rigs needing compact threaded RF feeds
- Retrofitting legacy chassis cutouts without modifying original enclosure metalwork
Frequently Asked Questions
What is the difference between a Type TM connector and standard SMA or TNC?
Type TM is a proprietary miniature threaded connector series developed by General RF Fittings. It features scaled-down body dimensions and specialized thread geometry that do not mate directly with standard SMA or TNC interfaces.
Does this bulkhead connector include the cable termination hardware?
Yes. The unit includes the gold-plated female contact pin, PTFE insulator washer, metal compression ferrule, silicone sealing boot, and the panel mounting nut, lock washer, and O-ring.
What mounting cutout does this bulkhead jack require?
The connector mounts through a standard circular clearance hole sized for the rear threaded barrel, secured on the panel backside by the included hex nut and lock washer, with the O-ring seating against the front flange.
Built for an era when mission-critical microwave links demanded precision metalwork and real gold plating, this connector is ready to complete your chassis run.
