The 50Ω assemblies have the snap-on FAKRA at one end and the threaded SMA at the other.
“FAKRA connectors offer a rugged impact resistant body with mechanically keyed and color-coded housings that meet automotive industry USCAR-17 standards,” according to Amphenol. “The SMA connector allows for easy connect and disconnect along with its compact size, which adds to usage of this assembly from commercial to industrial applications.”
They are available in a number of standard lengths on flexible RG-58 and RG-174 cables for use up to 3GHz.
The company also foresees use in drones.
Here is one of many FAKRA-SMA cable product pages