Amphenol 31-5999-RFX BNC Straight Crimp Plug

Amphenol RF 31-5999-RFX BNC Male Straight Crimp Plug (LMR-240 / Belden 9258 / RG-8X)

The Amphenol RF 31-5999-RFX is a commercial-grade, high-performance 50-Ohm BNC straight male RF coaxial connector engineered for low-loss cable terminations. Designed specifically for medium-diameter flexible coaxial cables—including LMR-240, Belden 9258, RG-8X, and LMR-240-UF—this connector utilizes a two-crimp assembly method (crimp center contact and crimp outer ferrule) to establish long-term electrical conductivity and mechanical strain relief.

Featuring a nickel-plated brass body, a gold-plated brass center pin, and Delrin (PTFE) dielectric insulation, the 31-5999-RFX provides reliable RF signal integrity with low VSWR up to 4 GHz. The bayonet coupling mechanism allows for quick quarter-turn mating and unmating, making it ideal for marine VHF radio installations, GPS antennas, commercial communications, and test equipment.

Key Features

• Optimized for LMR-240 & Belden 9258: Precision dimensioned for 0.240'' outer diameter low-loss marine and RF coaxial cables.

• Dual Crimp Termination: Both the center pin and ferrule are crimped for rapid, reliable assembly using standard hex crimp die sets.

• Gold-Plated Center Pin: Ensures superior electrical conductivity, low contact resistance, and corrosion immunity.

• Quick Bayonet Coupling: Classic BNC twist-lock mechanism provides secure, positive engagement resistant to hull vibration.

Specifications