GX12 2 pin connector kit 

widely used in aviation, navigation, computer, telecommunications,
oilexploration,navigation,alarm, transportation, 
machinery and electronics, etc
A robust  miniature 2 pin plug and  panel mount socket with bright chromed metal body. 
The plug has Female connectors and a threaded securing ring. 
The socket has Male connectors and an 11 mm thread with locknut for panel mounting (12mm hole)
Overall sizes, 
Plug, 34.5 mm long, 11 mm body, 15 mm locking ring.
Socket 20 mm long (including solder tags), mounting hole 12mm
Contact rating 250v, 5a

UK seller, UK stock. 
Fast despatch, usually same day (working days) for orders placed 
before 4.00 p.m. (11:00am Saturdays)