What Ships in the Box — and What the Hardware Means
The 227161-6: The lockwasher sits between the panel and the nut to prevent the jack from loosening under vibration or thermal cycling — a detail that matters when the cable is frequently disconnected and reconnected.
Mounting and Termination — Bulkhead Fit with Solder Tails
The mounting feature is bulkhead — front side nut.
The datasheet is available from the manufacturer; the key fit parameters — 50-Ohm impedance, 4 GHz bandwidth, BNC interface — are confirmed in the product specification.
