2mm pitch connectors are spring-loaded

MILL-MAX 836-22-0XX-30-001101 series 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. Products provide spring pins with a working travel of .0275” (0,7mm) and a maximum travel of .055” (1,4mm). With a base diameter on the pins of .056” (1,42mm) and a plunger diameter of .032” (,81mm) there is adequate space for laying out the pcb pads and traces on both the solder and mating sides of the devices. The initial, uncompressed, height of product is .295” (7,5mm).

http://www.mill-max.com/PR650