Board Stacking Connector, 51 Contact(s), 2 Row(s), Male, Straight, 0.039 inch Pitch, Surface Mount Terminal, Locking, Natural Insulator, Receptacle,

Board to Board & Mezzanine Connectors 51P VERT PLUG SMT 6MM MATED HEIGHT
Conn Cylindrical Circular PIN 19 POS Solder ST Jam Nut 19 Terminal 1 Port