Panel-mount BNC jack for RG-58, 50 Ohm signal path
The TE Connectivity 413771-1 is a BNC-style jack (female socket) with a bayonet lock, designed for panel-mount bulkhead installation using a front-side nut. It is a 50 Ohm impedance connector rated to 4 GHz with an insertion loss of 0.2 dB, making it suitable for RF signal paths in test equipment, telecom infrastructure, and instrumentation where a reliable, quick-disconnect coaxial interface is needed. The connector is supplied as a 6-piece kit: the jack body, one crimp contact, one ferrule, one gasket, one lockwasher, and one nut. The center contact is beryllium copper with gold plating, and the body is zinc with a nickel finish. The dielectric is polymethylpentene (PMP). This part is specifically listed for cable group RG-58, 58A, 58B, 58C, and Belden 88240 — the shield termination and contact termination are both crimp-style, which is the standard field-termination method for these cables.
Cable compatibility and termination checklist
The 413771-1 is built for RG-58 and its variants (58A, 58B, 58C) plus Belden 88240. The kit includes the ferrule and contact needed for one termination. The bayonet lock provides a quick, positive mate with the corresponding BNC plug. The voltage rating is 500 V.
Obsolete — sourcing and replacement guidance
The TE Connectivity 413771-1 is listed as Obsolete. Buyers needing this specific BNC jack for a repair or legacy build should source it through the surplus and broker channel.