The Molex 0734151121 is a 50 Ohm MMCX plug, male pin, from the 73415 series — a snap-on RF interconnect for small-diameter coax. It's rated to 6 GHz, which covers the full MMCX band for most wireless and GPS applications. The kit includes the connector body, an end cap, and a crimp ferrule, so it's ready to terminate as a field-assembled cable end. Gold plating on both the body and centre contact keeps corrosion at bay in outdoor or industrial enclosures.
This plug is designed for RG-174, RG-188, and RG-316 coax — the three most common 50 Ohm flexible cables in the 2-3 mm diameter range. The centre contact is solder-terminated, and the shield is crimped via the included ferrule. That combination gives a reliable RF ground and pulls the braid tight before the solder joint takes the centre conductor. The snap-on fastening type means the mating receptacle is pushed on and pulled off — no threads, no torque spec. Rated for 500 mating cycles, which is solid for a test-lead or frequent-disconnect scenario. The right-angle body keeps the cable run low-profile against the panel or board edge.
There is no documented replacement or cross-reference from Molex; the 73415 series is the current design.