Coaxial Connector, QN Quick Fit, Jack, Bulkhead, 400 Series, Crimp, 

Part Number: CH-QNJ-400-BH, 

QN, N Type Quick Fit, (Push fit, Blind-Mate),
Fits LMR400 and equiv cables, RG213, RG393 etc

Jack (Conventional Female), 

400 Series,

Crimp, 

RFShopUK-Other Quick Fit Connectors

RFShopUK-400 Series Cable