Power and signal duty in a single-row shroud
The 1586968-1 is the 5-position single-row member of TE's Universal MATE-N-LOK header line, rated 12 A per circuit at 600 VAC. Tin-plated phosphor bronze contacts suit moderate mating-cycle duty; the shrouded 4-wall housing with locking ramp provides polarization and retention in a through-hole solder termination.
The 0.250" (6.35 mm) pitch and 12 A per-circuit rating place this header in the power-distribution range — the current density is limited by the tin contact interface, not the housing.