The 000-68175-1004: It's a field-installable, free-hanging connector that terminates with either crimp or solder on the center contact and a crimp shield. Typical applications include test equipment, instrumentation, and RF signal distribution where a bayonet-lock quick mate is preferred.
The cable group covers RG-59, 59B, 62, 140, 210, Belden 8241, 8263, 8279, and 9209. The PTFE dielectric handles -65°C to 165°C.
That means Amphenol has flagged it for phase-out — no last-time-buy date is published here, but the window is closing. For a new BOM, look at the current Amphenol RF BNC catalog for a direct replacement with the same interface and cable group.
Bayonet lock provides a quick, secure mate with any standard BNC jack. The center contact is gold-plated brass, good for 500 mating cycles — enough for test-bench or field-service reconnect duty. Shield termination is crimp; the center contact can be crimped or soldered. The nickel-plated brass body and silver housing color are standard for BNC.