44-Position Dual-Row at 1.27 mm Pitch
The 20021311-00044T4LF: The contact finish is 10.0 µinch gold over nickel on the mating face, with 100.0 µinch tin on the solder posts.
Through-Hole Termination and Push-Pull Retention
In a low-vibration board-to-board stack, that is fine — the connector is not meant for cable-side pull forces.
Peer Comparison: 40 vs 44 vs 50 Positions
The 20021311 series offers the same 1.27 mm pitch, dual-row layout, gold mating finish, and 0.094-inch post length across 36, 40, 44, and 50 positions. If the BOM calls for 44 positions, the 40-position part leaves four unused pads; the 50-position part adds six extra contacts that may need to be left unpopulated or tied off. Stick with the exact count to keep the board layout clean.