The Amphenol BERGSTIK® II 86503-142HLF is a 42-position, dual-row unshrouded male pin header on the standard 0.100" (2.54mm) pitch. The square pins are phosphor bronze with a 30.0µin (0.76µm) gold or Gold, GXT™ mating finish, rated for 5A per contact at 110V.
The 0.100" pitch matches standard 2.54mm grid prototyping boards and common IC footprints, so board layout is straightforward. The 0.250" (6.35mm) mating pin length provides a solid engagement depth for the matching receptacle, while the 0.120" (3.05mm) solder tail is suited for standard 1.6mm PCBs.
This is typical for unshrouded headers used in board-to-board stacking where the mated pair is not subject to vibration or cable strain.