RS PRO Circular Connector, 3 Contacts, Panel Mount, Plug, Male, IP68

From RS Pro, these threaded plugs are serious contenders for your application. This particular model has a bigger and stronger shell complimented by its 2 hole flange-mounted connection. That coupled with the IP68 rating, makes sure that this industrial connector excels in harsh environments. When choosing a male connector, this version should really be one you consider.

2 way, 3 way and 5 way available
Cable outer diameter acceptance: 4.5 mm - 7 mm
Screw contact termination
High-quality Nylon66 shell
Panel hole cutout diameter: 21 mm