The 0.156" (3.96mm) pitch aligns with the standard MTA-156 header footprint, making it a direct wire-to-board interconnect for harness assemblies.
The IDC termination accepts 22 AWG wire, either discrete or ribbon cable, and the closed-end housing prevents wire over-insertion.
Compared to the 4-Position Variant
The 3-640428-5 carries 5 positions, while the sibling 3-640428-4 carries 4 positions at the same 0.156" pitch. The 5-position version matches a 5-circuit BOM line; the 4-position version is the correct fit for a 4-circuit header. No other functional difference exists in the series — both use the same IDC termination, 22 AWG wire range, and locking ramp fastening.