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Amphenol 31-335-RFX — RF Cable Assemblies

Amphenol 31-335-RFX BNC Plug, RG-58, 4 GHz, 50 Ohm

MPN31-335-RFX
Active

Amphenol RF BNC plug, male pin, 50 Ohm, 4 GHz, RG-58 cable group, crimp termination, nickel body, 500 mating cycles, bulk pack of 3 pcs.

$9.2500Ref. price · indicative, final on quote
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for stock & sourcing questions
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent supplier — new & surplus connector stock· Listing updated Jul 2026

Specifications

31-335-RFX key specifications
ParameterValue
MountingFree Hanging (In-Line), Right Angle
Connector typePlug, Male Pin
Fastening typeBayonet Lock
Voltage rating500 V
Frequency - max4 GHz
Cable groupRG-58, 58A, 58B, 58C, 141, 303, LMR-195, Belden B7806A, 9907
Operating temperature-65°C~165°C
Body materialBrass
Housing colorSilver
Dielectric materialPolyoxymethylene (POM) Acetal
Center contact materialBrass
PackageBulk

All specifications

31-335-RFX additional specifications
ParameterValue
Includes3 pcs - 1 Connector, 1 Contact, 1 Ferrule
Impedance50Ohm
Body finishNickel
Mating cycles500
Insertion loss0.2dB
Number of ports1
Shield terminationCrimp
Contact terminationCrimp
Center contact platingGold

Product details

BNC Plug for RG-58, 4 GHz, 50 Ohm — Crimp Termination

The 31-335-RFX: Both the shield and centre contact are crimp-terminated, giving a repeatable, gas-tight connection that holds up to vibration. The bayonet lock mates fast and the nickel-plated brass body resists corrosion in lab, test, and comms-rack environments.

The gold-over-brass centre contact keeps contact resistance stable over those cycles — the nickel body finish handles the wear.

Crimp vs. Solder: 31-335-RFX vs. 31-320-RFX

The sibling 31-320-RFX is the same BNC plug for the same cable group, with the same electrical ratings (4 GHz, 50 Ohm, 500 V). The difference is in the contact termination: the 31-335-RFX is all-crimp (shield and centre), while the 31-320-RFX allows either crimp or solder on the centre contact. If your harness shop prefers soldering the centre pin for a visual inspection point, the 31-320-RFX is the one. For a pure crimp production line, the 31-335-RFX is the correct pick.

Frequently asked questions

Is the 31-335-RFX compatible with RG-58 cable?

Yes, the 31-335-RFX is designed for RG-58, 58A, 58B, 58C, 141, 303, LMR-195, Belden B7806A, and 9907 cables. It uses a crimp termination for both the shield and centre contact.

What is the difference between 31-335-RFX and 31-320-RFX?

Both are BNC plugs for the same cable group with identical RF performance (4 GHz, 50 Ohm). The 31-335-RFX uses full crimp termination; the 31-320-RFX allows crimp or solder on the centre contact. Choose the 31-335-RFX for a pure crimp line.