The 5413779-4 from TE Connectivity AMP Connectors is a straight BNC jack (female socket) with 50 Ω impedance, free-hanging in-line, for crimp termination.
The 5413779-3 from TE Connectivity AMP Connectors is a straight BNC jack (female socket) with 50 Ω impedance, free-hanging in-line, for crimp termination.