Board Fit and Pin Count
The 68464-172H: Row spacing is also 0.100", so the overall board pattern is a 2×36 grid that matches common wire-wrap and IDC receptacle layouts. This keeps the board footprint compact but offers no keying or polarization; verify the mating half orientation during assembly.
Contact Plating and Current Duty
Phosphor bronze contact material provides good spring retention and corrosion resistance under the gold plate. The square pin shape mates with standard 0.025" square-post receptacles.