What fits and what locks
The four-wall shroud surrounds the male pins, and the latch holder on each end clicks into the matching receptacle housing — no secondary hardware needed to keep the pair mated under vibration.
RoHS non-compliant per the listing — verify your assembly's exemption or end-market requirement before committing the line.
Same pitch, same latch, same 11 mm stack height as the B20B-PUDSS-1 (20 positions) and the B24B-PUDSS-1 (24 positions). The only difference is the pin count — 22 positions here splits the difference between the two.