Product Overview
Amphenol RFX 31-318-RFX Female BNC Panel Mount Receptacle 50 Ohm
Condition
Unused new old stock (NOS). Individual connector kit includes threaded bulkhead body, red O-ring gasket, hex nut, internal-tooth lock washer, crimp ferrule, and gold-plated contact pin in factory printed component bag with assembly diagram.
Ships same or next business day from our Idaho warehouse. Honest pricing, no nonsense.
Online since 1999. A no-hassle satisfaction guarantee on every order.
Product Overview
Amphenol RF 31-318-RFX (also cataloged as 031-318-RFX) is a 50-ohm straight BNC bulkhead jack designed for rear-panel mounting and miniature coaxial cable termination. Engineered for RG-174, RG-188, RG-316, and Belden 7805 lines, this connector assembly provides a secure bayonet interface across frequencies from DC up to 4 GHz. The nickel-plated brass body features external threads and an O-ring seal for panel pass-through installations, while the phosphor bronze center contact is gold-plated for reliable conductivity and corrosion resistance.
Key Features
- 50 Ohm nominal impedance rated for high-frequency RF transmission up to 4 GHz
- Sized for RG-174, RG-188, RG-316, and Belden 7805 miniature coaxial cables
- Bulkhead panel-mount design with mounting nut, lock washer, and sealing O-ring
- Durable nickel-plated machined brass body with Delrin dielectric insulator
- Phosphor bronze female contact pin with gold plating for dependable signal continuity
- Crimp outer ferrule termination with crimp or solder center pin connection
- Rated for working voltages up to 500 V RMS
Applications
- Mounting antenna inputs and RF test points onto custom aluminum chassis panels
- Replacing damaged miniature coax bulkhead jacks on laboratory signal generators and oscilloscopes
- Building lightweight 50-ohm jumper leads for amateur radio equipment and software-defined radio (SDR) setups
- Prototyping sensor interfaces and video feed pass-throughs in robotics projects
Frequently Asked Questions
What cable types fit this Amphenol 31-318-RFX connector?
This jack is designed specifically for miniature coaxial cables including RG-174, RG-188, RG-316, and Belden 7805. It will not fit larger coax lines like RG-58 or RG-8X.
How does the center pin attach to the cable conductor?
The gold-plated center pin can be either crimped or soldered directly to the stripped cable center conductor before inserting into the connector body.
Why buy this individually packaged Amphenol connector instead of a bulk surplus lot?
You receive the exact genuine Amphenol RF part number you need with complete factory mounting hardware, avoiding mixed-lot hardware mismatches or low-grade mystery-alloy knockoffs. All orders ship from our Idaho warehouse for an $8 flat rate, or ship free once your order totals $28 or more, departing the same or next business day.
Nothing cleans up a custom enclosure build quite like a proper bulkhead BNC that drops right into the panel cutout and locks down tight. Thread the nut, cinch the braid, and put your next RF project on the air.
