VAL-U-LOK TPA insert
The 1969609-8 is an 8-position Terminal Position Assurance (TPA) insert for TE's VAL-U-LOK housing family, accepting 26-22 AWG wire.
What it locks into
Snaps into the matching VAL-U-LOK receptacle or plug housing after the crimp terminals are seated — the TPA locks the terminal shoulders in place, preventing push-back during wire strain.