0.250" tab, non-insulated crimp
The 170151-2 is a male quick-disconnect tab in TE's Fastin-Faston series, accepting 14-18 AWG wire with a non-insulated crimp termination. The 0.250" (6.35mm) tab width and 0.032" (0.81mm) thickness mate with standard Faston receptacles; tin-plated brass carries the current without additional plating for moderate-duty signal or power connections.
Same-series tab, different tab width
The 170151-2's 0.250" (6.35mm) tab width is narrower than the 0.312" (7.92mm) width of the Fastin-Faston PIDG 1377175-8, which also carries a non-mating-end insulation sleeve for 14-16 AWG. Among non-insulated Utilux peers, the 1-1659250-0 uses a 0.248" (6.30mm) tab width for 17-20 AWG, while the 1-1627194-4 matches the 0.250" (6.35mm) width for 15-18 AWG — both are female receptacles, not tabs.