This housing is glow wire compliant, which means it meets the IEC 60335-1 glow-wire test for appliance applications — a requirement for white goods and similar equipment where a hot component must not sustain a flame.
This is a plug housing, so it mates with a Mini-Fit Sigma receptacle header (the male pin side). The locking ramp is the fastening type — it clicks into the header's latch, and you'll hear it seat. For the terminals, the 2004711005 accepts the Mini-Fit Sigma female crimp socket. The exact terminal part number is Molex 45750-1111 (or the equivalent 45750- series for wire gauge 18-24 AWG). No special extraction tool is required beyond a standard Mini-Fit extraction tool (Molex 11-03-0044) if you need to remove a terminal after insertion. The crimp termination gives a gas-tight connection when properly crimped with the correct die.
The 2004721005 is the 5-position receptacle housing in the same Mini-Fit Sigma series. The difference is simple: 2004711005 is the plug (female socket housing, free-hanging), and 2004721005 is the receptacle (male pin housing, also free-hanging). They mate together. If your BOM calls for the plug side, this is it. The 200472 series is the other half of the pair.