Thru-hole spring-loaded connectors have 2mm pitch

MILL-MAX Through-hole version of 2mm pitch spring-loaded connectors (SLC’s) are an appealing option combining both durability and space saving qualities. Devices serve as a practical solution for board-to-board or device-to-board connections with the additional security of through-hole mounting. Devices provide spring pins with a working travel of 0.7mm and a maximum travel of 1.4mm. The initial, uncompressed, height of the devices from the board surface is 7.5mm.  https://www.mill-max.com