The JAE HJ1P050MA1R6000 is a 50-position plug from the HJ1 series, terminated by soldering discrete or ribbon cable wires directly to the center strip contact. The free-hanging (in-line) mount means it floats in the cable, not on a PCB, so the strain relief is on the wire bundle, not a solder joint.
This plug accepts two wire gauge ranges: 34-36 AWG and 36-44 AWG. The 36-44 AWG band covers the fine-wire end — micro-coax, flex circuits, and ultra-thin discrete leads — while the 34-36 AWG range gives a little more mechanical heft for ribbon cable assemblies. Termination is solder-only; there is no crimp pocket, so the wire is tinned and soldered to the center strip contact. The solder joint is the mechanical and electrical anchor — no secondary strain relief beyond the cable itself.