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Amphenol 031-321-1012 — RF Cable Assemblies

Amphenol 031-321-1012 BNC Plug, 50 Ohm, 4 GHz, RG-59

MPN031-321-1012
Active

Amphenol BNC plug, 031-321-1012, male pin, 50 Ohm, 4 GHz, crimp termination, RG-59 double braid, bulk pack includes connector + contact + ferrule.

$8.1900Ref. price · indicative, final on quote
Amphenol 031-321-1012 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 China distributor & sourcing agent· Listing updated Jul 2026

Specifications

031-321-1012 key specifications
ParameterValue
MountingFree Hanging (In-Line)
Connector typePlug, Male Pin
Fastening typeBayonet Lock
Voltage rating500 V
Frequency - max4 GHz
Cable groupRG-59 Double Braid, Belden 9231
Operating temperature-65°C~165°C
Body materialBrass
Housing colorSilver
Dielectric materialPolytetrafluoroethylene (PTFE)
Center contact materialBrass
PackageBulk

All specifications

031-321-1012 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

Crimp-on BNC for RG-59 Double Braid

Cable Group Fit — RG-59 vs RG-58

This plug is dimensioned for RG-59 double braid (Belden 9231). The crimp ferrule and centre contact are sized to the 0.212-inch nominal dielectric diameter of RG-59 class cable. If your BOM calls out RG-58, 58A, 58C, 141, or LMR-195, the sibling 31-320-RFX uses the same body and gold-plated contact but with a ferrule and centre pin sized for the smaller RG-58 dielectric. Same 50 Ohm impedance, same 4 GHz ceiling, same 500-cycle bayonet — the only difference is the cable group the kit fits.

Frequently asked questions

What is the impedance of 031-321-1012?

The 031-321-1012 is a 50 Ohm BNC plug, matched to standard 50 Ohm coax systems for video, RF instrumentation, and telecom signal paths.

Is 031-321-1012 compatible with RG59 double braid cable?

Yes, the 031-321-1012 is specifically listed for RG-59 double braid and Belden 9231. The ferrule and centre contact are sized for that cable group's dielectric diameter.

Does 031-321-1012 include the contact and ferrule?

Yes, the kit includes three pieces: the connector body, one centre contact, and one crimp ferrule — everything needed for a single termination.