Product Overview
Amphenol UG-88/U BNC Straight Clamp Plug - 50 Ohm, RG-58 Compatible, Solder Center Pin, No Crimp Tool Required
Condition
Unused NOS. All hardware components present: threaded clamp nut, flat washer, rubber gasket, metal ferrule, and center contact pin. Nickel-plated body with knurled coupling ring; markings legible on barrel. Sourced from legacy electronics supply chain recovery.
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Product Overview
Amphenol 74868 UG-88/U is a male BNC straight clamp plug rated at 50 ohms, designed for RG-58 and compatible miniature coaxial cables. The center contact is soldered to the cable's inner conductor; the outer braid is secured by a threaded compression clamp - no crimping tool required. Body is nickel-plated brass with a PTFE insulator and silver-plated brass center contact. Frequency range: 0 to 4 GHz. Also cross-referenced as Amphenol commercial part 031-2 and NSN 5935-01-411-0594.
Key Features
- Connector type: BNC plug (male), straight
- Impedance: 50 ohm
- Attachment method: solder center pin / threaded clamp outer braid
- Compatible cables: RG-58, RG-141, RG-142, RG-223, RG-400, Times LMR-195
- Frequency range: 0 to 4 GHz
- Body: nickel-plated brass
- Center contact: silver-plated brass
- Insulator: PTFE (Teflon)
- Multi-piece hardware stack included: clamp nut, washer, gasket, ferrule, center pin
- Cross-references: UG-88/U, 74868, 031-2, NSN 5935-01-411-0594
Applications
- Field technician terminating an RG-58 run to test equipment using only a soldering iron and wrenches - no trip back to the shop for a crimping tool
- Bench repair specialist rebuilding a coaxial cable assembly for avionics or telecom gear where a precise, reworkable termination is required
- Ham radio operator hand-building a custom-length jumper between a transceiver, antenna tuner, or dummy load in the home shack
- Hobbyist or experimenter constructing an RF switch box or signal distribution panel who wants a connector that can be disassembled and reused if cable length needs to change
- Vintage radio restorer replacing deteriorated original BNC terminations with period-correct clamp-style hardware
Frequently Asked Questions
Is this connector compatible with RG-8 or RG-213 thick coax?
No. The clamp hardware is sized for miniature 50-ohm cables: RG-58, RG-141, RG-142, RG-223, RG-400, and Times LMR-195. RG-8, RG-213, and LMR-400 require larger connectors and will not fit this assembly.
Can this be used on 75-ohm cable like RG-59 or RG-6?
The connector will physically fit some 75-ohm cables of similar diameter, but this is a nominal 50-ohm connector. Where impedance matching is critical - which it is in most RF applications - mixing 50-ohm hardware with 75-ohm cable causes signal reflection and loss. Not recommended for 75-ohm systems.
Does it include all the hardware pieces needed for assembly?
Yes. The complete hardware stack is present: threaded clamp nut, flat washer, rubber gasket, metal ferrule, and center contact pin. All pieces visible and accounted for.
Do I need a crimping tool to install this?
No. That is the point of the clamp design. Assembly requires a soldering iron to attach the center pin to the cable's inner conductor, and standard wrenches to tighten the clamp nut. No proprietary crimping tool needed.
Can the connector be removed and reused if I make a mistake?
Yes. The threaded clamp can be loosened and the assembly disassembled. The center pin can be desoldered. This is one of the practical advantages of the clamp style over crimp connectors, which are permanent once installed.
A clamp connector takes a few extra minutes compared to a crimp - but when you are building a cable that might need to change length next season, those extra minutes are insurance. Assemble it once, know you can take it apart if you need to.
