3.96mm pitch, right-angle, friction-lock header for wire-to-board
Its 0.156-inch (3.96mm) pitch gives the footprint room for 20-24 AWG wire, and the right-angle through-hole termination keeps the connector parallel to the board, useful in enclosures where the cable exits sideways.
Friction lock keeps the mate tight
Tin contacts, 600VAC, UL94 V-0
10 vs 11 vs 12 vs 13 positions — same series, same specs
The 1-640389-0 (10 positions) shares the same pitch, shrouding, friction lock, right-angle orientation, and tin plating with the 1-640389-1 (11 positions), 1-640389-2 (12 positions), and 1-640389-3 (13 positions).