It's part of the SMB series — a snap-on, subminiature interface common in telecom and video distribution where quick connect/disconnect is needed without a threaded coupling. This specific variant is pre-configured for RG-179 cable and ships as a three-piece kit: the connector body, the centre contact, and the ferrule, all in one bag. 75 Ohm impedance, 4 GHz max. Gold-plated beryllium copper centre contact, nickel-plated zinc body, PTFE dielectric, -65°C to 165°C range.
The 5415487-1 is listed as Obsolete by TE Connectivity. There is no official successor order code on record, so a direct drop-in replacement from the same manufacturer isn't available through standard distribution. If you're maintaining an installed base, verify the cable group (RG-179) and the 75 Ohm impedance match before ordering a substitute from another SMB supplier.
Termination is all crimp — both the centre contact and the shield ferrule get crimped, which is the standard field-install method for RG-179. The snap-on fastening means the plug pushes onto a mating SMB jack and locks with an audible click; no tool is needed beyond the crimper. The free-hanging (in-line) body has no flange or panel mount, so it's meant for cable-to-jack connections inside an enclosure or on a patch panel where the cable isn't anchored separately.