SDL series board to board machined through hole double row socket strips with a 2.54mm pitch and a low profile design. The body of these SDL series board-to-board PCB socket strips is made from black glass filled polyester and the contacts are made from phosphor bronze with a gold plating. The temperature range at which these board to board low profile machined socket strips can be used is -55 to +125°C.
Part numbers SDL-XXX-X-10 have hollow leg contacts with a 3.10mm pin shoulder height.
Part numbers SDL-XXX-X-12 are micro sockets which have hollow leg contacts with a 2.41mm pin shoulder height.
Part numbers SDL-XXX-G-XX have 0.76μm gold plated contacts with a 0.25μm gold shell.
Part numbers SDL-XXX-T-XX have 0.76μm gold plated contacts with a tin shell.

These SDL series board-to-board machined socket strips mate with the TD series header terminal strips: see stock number 765-5874 typically.

2.54mm Board to Board and Wire to Board - Samtec