Commercial MATE-N-LOK free hanging wire to wire plug style socket housings with polarization and positive locking for accurate and secure mating (see socket style pin housings - stock number 712-1482 typically). These Commercial MATE-N-LOK plug style socket housings are made from natural coloured UL94V-2 nylon.
Socket contacts for these Commercial MATE-N-LOK pin housings need to be purchased separately, see stock number 719-0346 typically)

5.0 mm Power Key Connectors are for power circuits of home appliances, especially targeting gas appliances. The connector features four kinds of keying per housing. Only color-coding of housings limited the efficiency of blind mating where you could not see connectors. However, the new keying mechanism not only improves assembly efficiency but also helps prevent mismating. Part numbers involved can be reduced so that purchasing and stock level control can be made simpler.

TE Connectivity Commercial MATE-N-LOK Range