The 215307-5: The through-hole termination with kinked pins locks the part in place during soldering, and the 0.122" post length gives enough standoff for wave solder clearance on a standard 1.6 mm board. Black or green insulator colour is the only variation — both meet the same material spec.
Mating interface and contact finish
For a board-to-board connector that sees periodic rework or field replacement, this plating grade is the difference between a reliable connection and a fretting-corrosion failure. The post side is tin-plated at 98.4 µinch (2.50 µm) — standard for solder-joint compatibility with lead-free wave solder.
