The 3.81 mm pitch and 5.08 mm row spacing give it a wider footprint than the 3.00 mm Micro-Fit or 2.54 mm headers — it's sized for moderate current per circuit where you need more creepage and easier terminal insertion.
The One Thing You Must Order Separately
The housing accepts the terminal, then you insert the wire assembly into the cavity until the lance locks. The black color is standard for the D-3100 receptacle; no keying or color-coding variant is listed for this position count.
