The 228226-3: It's a same-series adapter, meaning both ends are BNC, so it's used to extend a coax run or patch between two bulkhead-mounted jacks without changing the connector family. The adapter is built around a 50 Ohm impedance, matched to standard RG-58, RG-142, and LMR-195 type coax. Both ends are female sockets (center gender female-to-female), so you'd mate this with two male BNC plugs. The fastening is bayonet lock on both sides — the standard quarter-turn BNC coupling that gives a positive snap when fully seated. The mounting feature is bulkhead style — the adapter passes through a panel cutout and is secured by the nut from the opposite side, with the lockwasher preventing rotation under cable torque.
What You Get in the Box
The 228226-3 includes three pieces: the BNC adapter body, a lockwasher, and a hex nut. The lockwasher is a split-ring type that bites into the panel and the nut to keep the adapter from loosening under vibration or when cables are cycled. The nut is standard hex, tightened with a 14 mm or 9/16-inch wrench. No gasket or O-ring is included — this is not a sealed bulkhead pass-through.
Mechanical Fit — Panel Cutout and Mounting
This is a straight, panel-mount adapter. The bulkhead mounting feature means it installs through a round panel hole.