Crimp termination, free-hanging fit
The 160684-4 is a non-insulated Fastin-Faston female quick-disconnect receptacle for 17-20 AWG wire, terminated by crimp and mounted free-hanging in-line. Tab width is 0.110" (2.79mm) with a 0.020" (0.51mm) tab thickness; the tin-plated brass contact suits moderate-cycle applications where corrosion resistance is not the primary driver.
Tab width and wire range cross-check
The 160684-4 uses a 0.110" tab width and accepts 17-20 AWG. The Utilux-series peer 1-1659250-0 shares the same wire range and tab width but uses a thicker 0.031" (0.79mm) tab stock, which changes insertion force and retention in the mating tab. The Utilux 1-1627194-4 also uses a 0.250" tab width and 15-18 AWG — a different tab size and wire range, so not a direct fit for the same circuit.