KEL Corporation, 8800, 20 Way, 2 Row, Right Angle PCB Header

8900 series PCB mount board to board header connectors with a 1.27mm pitch, low profile design and low insertion and withdrawal force. These 8900 series 1.27 mm PCB plugs have a single-point spring contact design that assures a reliable electrical connection. The housings of these 8900 series board to board header connectors are designed to prevent misinsertion and feature a guide mechanism to aid accurate mating. The connector produces an audible click to indicate when mating is complete. PCB hooks are featured on these 8900 PCB headers to secure the connector to the PCB during the soldering process. These 8900 series board to board PCB headers support stacking, horizontal and vertical board to board applications and have a range of stacking heights.
8911-xxx-178S-A-F have a stacked height of 7 mm, 8 mm and 10 mm
8911-xxx-178S-C-F have a stacked height of 9 mm, 10 mm and 12 mm
These 8900 series PCB mount board to board header connectors mate with the 8900 series PCB mount board to board socket connectors

Low profile design
Low insertion and withdrawal force
One point spring contact design for a reliable electrical connection
Guide mechanism to aid accurate mating
Audible click indicates complete mating
PCB boardlocks for secure connection to PCB
Supports stacking, vertical and horizontal board to board applications
Wide range of mating heights