SS series board to board through hole single row precision screw machined socket strips with a 2.54mm pitch, 3.18mm tail length and a non-flush design. The body of these SS series board-to-board PCB screw machined socket strips is made from black glass filled polyester and the contacts are made from beryllium copper with a choice of tin or gold plating. The temperature range at which these SS series PCB through hole mount precision screw machined socket strips can be used is -55 to +125°C.
Part numbers SS-XXX-T-X-X have 0.76μm gold plated contacts and a tin shell.
Part numbers SS-XXX-TT-X-X have tin plated contacts and tin plated shell.

These SS series PCB board-to-board machined socket strips mate with the following:
TS series precision machined terminal strips - see stock number 765-6388 typically.
BBS series machine board stacking strips - see stock number 766-6458 typically.
BBL series machine board stacking strips - see stock number 766-6398 typically.

2.54mm Board to Board and Wire to Board - Samtec