The 901-10777: The threaded coupling and gold-plated brass body give it the mechanical feel of a standard SMA, but the gender swap means you cannot mate it with a standard SMA jack without cross-threading the interface.
The mating half for this 901-10777 jack is the RP-SMA plug with a female socket — the Amphenol 901-10786 is a direct mate, sharing the same 50 Ohm impedance, 335 V rating, and 500-cycle gold-over-beryllium copper contact construction. The PTFE dielectric holds the centre contact concentric; the gold plating on both the body and centre contact resists corrosion in repeated mate/unmate cycles.