The 0.100" (2.54 mm) pitch on both rows matches the standard 0.100" grid, so the footprint lines up with common prototyping grids and IDC-compatible receptacles. Rated UL94 V-0 on the black thermoplastic housing.
Contact length on the mating side is 0.230" (5.84 mm), and the post length below the insulator is 0.125" (3.18 mm) — check the board thickness and the mating receptacle's insertion depth against these numbers before committing the footprint. All 56 positions are loaded — no skipped or dummy pins. The dual-row layout at 0.100" row spacing gives a 0.100" x 0.100" grid, which is the same pattern used by standard 0.100" IDC ribbon cable connectors. Pin 1 is at the end of the row; the unshrouded header has no keying feature, so watch the orientation when mating to a polarized receptacle.