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Amphenol 031-4321 — RF / Coaxial Connectors

Amphenol 031-4321 BNC Plug, 50 Ohm, 4 GHz, RG-59/62/140/210

MPN031-4321
Active

Amphenol BNC plug, male pin, 50 Ohm, 4 GHz, 500 V, crimp/solder termination, bayonet lock, includes contact and ferrule, RG-59/62/140/210.

$11.5554Ref. price · indicative, final on quote
Amphenol 031-4321 datasheet (PDF)
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

031-4321 key specifications
ParameterValue
MountingFree Hanging (In-Line)
Connector typePlug, Male Pin
Fastening typeBayonet Lock
Voltage rating500 V
Frequency - max4 GHz
Cable groupRG-59, 59B, 62, 140, 210, Belden 8241, 8263, 8279, 9209
Operating temperature-65°C~165°C
Body materialBrass
Housing colorSilver
Dielectric materialPolytetrafluoroethylene (PTFE)
Center contact materialBrass
PackageBulk

All specifications

031-4321 additional specifications
ParameterValue
Includes3 pcs - 1 Connector, 1 Contact, 1 Ferrule
Impedance50Ohm
Body finishSilver
Mating cycles500
Insertion loss0.2dB
Number of ports1
Shield terminationCrimp
Contact terminationCrimp or Solder
Center contact platingGold

Product details

50 Ohm BNC Plug for RG-59/62/140/210 — Kit Includes Contact and Ferrule

The 031-4321: The kit ships as three pieces — the connector body, the crimp contact, and the ferrule — so you are not sourcing a separate crimp ring.

The PTFE dielectric and gold-plated brass centre contact maintain a consistent 50 Ohm impedance across the mated pair.

Crimp or Solder Centre Contact — Your Choice on Termination

The centre contact accepts either crimp or solder termination, giving you flexibility on the assembly line or in the field. The shield is crimped via the included ferrule over the braid.

Frequently asked questions

Does the 031-4321 include the contact and ferrule?

You do not need to order the ferrule separately.

Is 031-4321 a male or female BNC connector?

It mates with a BNC jack (female) receptacle.

Is 031-4321 suitable for RG-59?

Yes, RG-59 is listed in the compatible cable group. The plug accepts the RG-59 dielectric diameter and braid shield.