15 Circuits at 6.35mm Pitch — Universal MATE-N-LOK Header
The 350738-1: The 6.35mm (0.250") pitch and row spacing give each contact enough room for decent current handling — typical for this series, the tin-plated phosphor bronze contacts are rated for power and signal duty in general-purpose equipment.
The 0.550" (13.97mm) insulation height means the header sits tall above the board, so plan your z-height budget if the mating receptacle has a backshell or cable exit.
