The VT range of 11.88mm pitch Wire-to- Board 12A connectors from JST have arm locking and mis-insertion features.
The Headers of the VT range have board locks for 1.6 mm thick PCBs for increased board retention.
Cable size for the VT Contact is 20-16 AWG with an insulation diameter of 2.7 ～ 3.9 mm.
For a suitable Hand Crimp tool for the VT Contact see stock number 819-2700 .