Key Specs for the BOM Line
The 3-position count in a single row is the first check against your circuit count — this housing mates with a 3-circuit male header (same pitch and keying). The PA66 insulation material is UL94 V-2 rated by default for the class, though no specific flame rating is listed here.
How It Compares to Nearby Siblings
The 1-640508-0 is the 3-position single-row member. The 1-640507-0 is the 2-position single-row variant — same pitch, same latch lock, same panel-mount snap-in. If your harness needs only two circuits, that's the direct downsized choice. For a 4-position or 6-position dual-row configuration, the 1-640509-0 and 1-640510-0 add a second row at the same 0.165" (4.20 mm) row spacing, which changes the footprint from a single row of holes to a staggered 2x2 or 2x3 grid. The single-row housing is thinner side-to-side, so it fits tighter enclosures.