Power Double Lock socket for 16-20 AWG
The 177915-9 is a tin-plated socket contact from the Power Double Lock series, designed for 16-20 AWG wire with a crimp termination.
Comparing tin-plated socket options
The 177915-9 accepts 16-20 AWG wire; the 1-1326032-0 is a tin-plated socket for 16 AWG only, while the 929989-8 handles 17-20 AWG — all share the same crimp termination and tin finish.