The B6351B1-ND3G-50 from Amphenol is a straight BNC receptacle jack with front end for panel mount. This connector has bulkhead function suitable for panel thickness is 3.2mm. B6351B1-ND3G-50 is typically used in applications from DC to 4GHz and impedance of 50 ohm.
Delrin insulator
Nickel plating
VSWR of 1.3max at 0 to 4GHz
Phosphor bronze with gold plated contacts
Working voltage is 500V
Bayonet coupling mechanism provides quick mating and unmating