The 0.40mm pitch trap — this is the male plug for a 1mm stack
The Molex 5024302610 is a 26-position plug from the SlimStack 502430 series, with outer shroud contacts on a 0.016" (0.40mm) pitch in two rows. The mated stacking height is 1mm, with the connector body sitting 0.031" (0.80mm) above the board — this is the male half of a board-to-board mezzanine pair, designed to mate with the matching SlimStack receptacle. At 0.40mm pitch, this is a fine-pitch interconnect — the board footprint needs precise registration and the routing density is high. The 26 circuits fill both rows evenly (13 per row), and the 1mm stack height is fixed; there is no height adjustment range in this series.
If you are sourcing this part for a legacy design, the independent distribution channel can locate remaining stock. The 5024302610 datasheet and product drawings are still the reference for the footprint and mating dimensions; those documents do not change with the lifecycle status.
This plug mates with the matching SlimStack 502430 receptacle of the same circuit count and pitch — 26 positions, 0.40mm pitch, 2 rows. The outer shroud contacts on the plug engage with the inner contacts on the receptacle side. The mated pair achieves a 1mm stack height between boards. For a design that stays mated for the life of the product, this is fine; for repeated mating cycles in test or field service, a thicker gold grade would be preferred.