The 034-1120-12G: The bayonet lock provides quick, secure mating, and the nickel-plated brass body with gold-plated phosphor bronze centre contact supports 500 mating cycles — enough for field-service and rack reconfiguration without contact degradation.

Amphenol 034-1120-12G BNC HD Plug, 75 Ohm, 18 GHz, Bulk
MPN034-1120-12G
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Amphenol 034-1120-12G BNC HD plug, male pin, 75 Ohm, 18 GHz, nickel brass body, gold center contact, crimp termination, bulk pack.
$13.2700Ref. price · indicative, final on quote
Source DocumentedChannel stated on listing & quote
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Independent supplier — new & surplus connector stock· Listing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Mounting | Free Hanging (In-Line) |
| Connector type | Plug, Male Pin |
| Fastening type | Bayonet Lock |
| Frequency - max | 18 GHz |
| Cable group | Belden 4505R |
| Operating temperature | -30°C~85°C |
| Body material | Brass |
| Housing color | Silver |
| Dielectric material | Polytetrafluoroethylene (PTFE) |
| Center contact material | Phosphor Bronze |
| Package | Bulk |
| Impedance | 75Ohm |
| Body finish | Nickel |
| Mating cycles | 500 |
| Number of ports | 1 |
| Shield termination | Crimp |
| Contact termination | Crimp |
| Center contact plating | Gold |
Product details
Frequently asked questions
What is the impedance of 034-1120-12G?
The 034-1120-12G is a 75 Ohm BNC HD plug, designed for 75 Ohm cable systems such as Belden 4505R.
What cable is compatible with 034-1120-12G?
This plug is specified for Belden 4505R cable. For Belden 4694R cable, use the peer variant 034-1121-12G.