17-22 AWG power socket, tin crimp
The 144431-1 is a Junior Power Timer socket contact from TE Connectivity AMP Connectors, accepting 17-22 AWG wire with a tin finish and crimp termination.
Tin socket vs. boxed peers
Within the Junior Power Timer series, the 144431-1 (socket, 17-22 AWG) differs from the 929989-8 (socket, 17-20 AWG) and the 1-1326032-0 (socket, 16 AWG with 31.5µin (0.80µm) tin thickness) — wire gauge acceptance and plating thickness vary, but the crimp termination and tin finish are shared across the series.