What this 6-position right-angle header does that a straight header can't
The 9-966140-5 is a 6-position, 3-row header from TE's MCP series, pitched at 5.00 mm — wide enough to route moderate current traces between the pins without necking the board copper. The 4-wall shroud and latch holder give it a positive lock with the mating receptacle — you should hear it click home. In an automotive or industrial cabinet where vibration is a given, that latch keeps the pair mated when a straight header with a loose friction lock would let the connector walk off the pins. Rated for 24 VDC, this header fits the standard automotive and factory control bus voltage. The tin-plated contacts are a good match for moderate mating cycles (50-100) in a sealed environment; if the application cycles the connector quarterly in a corrosive atmosphere, consider a gold-plated sibling from the same series.
Make sure the mating receptacle and cable bundle have that clearance to the enclosure wall or adjacent board.