Its 0.156" (3.96mm) pitch gives you room for heavier wire or easier hand-routing on the board, and the shrouded - 2 wall design protects the male pins from damage during handling and mating.
Pitch, plating, and locking — what drives the fit
At 0.156" pitch, this header is wider than the 0.100" AMPMODU headers — the extra space means the board footprint is less dense, and the mating receptacle needs to match that pitch. The gold mating finish (14.5 µin) on the male pins supports repeated mating cycles better than a tin finish would, which matters if this connector sees field service or test-bench disconnect. The detent lock is a positive latch that keeps the connector pair from backing out under vibration, unlike an unshrouded header that relies solely on friction.