Product Overview
Amphenol 31-356 Straight 50 Ohm BNC Female Coax Jack with Boot
Condition
Unused new old stock (NOS) in clean physical condition. Components include the connector body, threaded contact and insulator insert, crimp ferrule, and black rubber strain relief boot. Markings legible: partial AMPHENOL stamping on body barrel. Sold each.
Same or next business day shipping from our Idaho warehouse. Reliable parts since 1999. Honest pricing, no nonsense.
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Product Overview
Amphenol 31-356 is a 50-ohm straight BNC female jack engineered for RG-58 and RG-141 coaxial cable assemblies. Built with a nickel-plated brass body, PTFE dielectric, and a gold-plated center contact socket, it provides a stable bayonet-locking RF interface for instrumentation, radio systems, and custom test leads. The assembly includes the rear crimp ferrule and flexible rubber boot for integrated strain relief.
Key Features
- 50 ohm nominal RF impedance
- Sized for RG-58 and RG-141 coaxial cable
- Straight BNC female (jack) mating interface with bayonet locking lugs
- Gold-plated center contact for reliable conductivity and corrosion resistance
- Nickel-plated brass body with durable PTFE insulator
- Includes matching metal crimp sleeve and molded rubber boot
Applications
- Terminating custom RG-58 coaxial patch cables at the electronics workbench
- Repairing damaged BNC antenna and signal leads on communications equipment
- Building inline RF adapters and test instrument extensions
Frequently Asked Questions
What cable types fit the Amphenol 31-356 connector?
This connector is sized to fit flexible 50-ohm coaxial cables matching RG-58 and RG-141 dimensions.
How is the connector terminated onto cable?
The center conductor attaches to the contact pin assembly via solder or crimp, while the outer shielding braid is clamped to the body stem by crimping the metal ferrule in place.
How does the 31-356 differ from standard BNC bulkhead jacks?
This is a free-hanging inline cable jack designed to attach directly to the end of a flexible coax run with a crimp ferrule and strain relief boot, rather than mounting through a chassis panel.
Nothing steadies an RF bench like having the exact right BNC on hand before the cable gets stripped. Terminate cleanly, slide the boot home, and lock your signal into place.
