It uses the legacy 0.100-inch (2.54 mm) pitch, making it a direct footprint match for standard perf-board or legacy PCB layouts that still route at that spacing. The 100.0 µin (2.54 µm) tin plating on the mating surface is thick enough for occasional mating cycles in a permanent-install environment — think test fixtures, internal board interconnects, or low-cycle field service.
Within the BERGSTIK® II family, the 91276-416HLF sits as the 16-position variant against the 10-position 91276-410HLF at the same 0.100-inch pitch and single-row layout. The decision between them is strictly circuit count — the footprint, current rating, and overall contact length (1.225 inches) are identical. Match the position count to your BOM line; there is no performance trade-off.