The TE Connectivity 1742657-1 is a crimp-on receptacle terminal sized for 18-22 AWG wire. It's the loose-piece contact that goes into a matching housing — you crimp it onto the wire, then insert it into the cavity until the latch seats. The terminal type is explicitly a crimp on receptacle, meaning it's the female half that receives the male pin or tab from the mating header.
Wiring and tooling — what works
Wire range is 18-22 AWG — solid or stranded, but stranded is the usual for crimp terminals in a harness. The crimp termination is a standard barrel-style; you'll need a TE-certified hand crimp tool or a pneumatic applicator that matches the terminal family. Common choices are the PRO-CRIMPER III or the CERTI-CRIMP frame with the appropriate die set, though the exact tool number depends on your volume and whether you're doing loose-piece or reel-fed. This terminal mates into any TE housing that accepts a receptacle contact in this wire range. The housing cavity geometry determines compatibility — you're looking for a housing that lists this base product number (1742657) in its contact specification. Typical applications are wire-to-board or wire-to-wire interconnects where the receptacle side is on the harness and the header is on the PCB.