CES series board to board through hole closed entry socket strips with a 2.54mm pitch. These board to board PCB socket strips have a low profile design with a 3.25mm solder tail. The body of these CES series board to board PCB closed entry socket strips is made from black glass filled polyester and the contacts are made from phosphor bronze with a matte tin plating. The temperature range at which these low profile board-to-board socket socket strips can be used is -55° to +105°C.
Part numbers CES-1XX-01-X-S are single row socket strips
Part numbers CES-1XX-01-X-D are double row socket strips

These CES series low profile board-to-board PCB socket strips mate with the following:
TLW series low profile square post headers: see stock number 765-6168 typically
TSM series square post headers: see stock number 765-6613 typically.
TSW series square post headers: see stock number 767-1044 typically.

2.54mm Board to Board and Wire to Board - Samtec