It uses a 0.100" (2.54 mm) square pin grid on both the mating pitch and row spacing — the standard footprint for legacy 0.100" ribbon cable IDC systems and perforated-board prototyping.
Footprint and fit
The 0.100" pitch and row spacing place this squarely in the classic BergStik / 0.025" square-post ecosystem. The 0.360" (9.14 mm) mating pin length gives enough reach to engage a standard 0.230"-deep receptacle housing; the 0.360" solder post length suits a 0.062" to 0.093" PCB thickness with room for a wave-solder fillet.
Phosphor bronze contacts with a 100.0 µ" tin mating finish and tin-plated solder tails.
Sourcing
No official second-source or cross-reference on record; the 44-position, 0.100" pitch, dual-row unshrouded header is a standard form factor with multiple suppliers, but the 95687-444HLF is the specific FCI BERGSTIK® II variant.