These Preci-dip DIL 813-S1 Series low resistance modular connectors have spring-loaded contacts (SLC) with through hole mounting into the PCB.

The Height dimension gives the initial height of the spring-loaded contacts
The plastic body height is 4 mm
The plunger stroke length is 1.4 mm

For counterpart SMT DIL Pad Connectors see stock number 702-0420 typical

UL 94V-0

Preci-dip Spring-Loaded Connectors

A perfect alternative to conventional connection solutions. The electrical multipoint connection between the mobile piston and the clip guarantees low, stable electrical resistance values without micro-discontinuities, even when the piston is moving or vibrating, thus assuring maximum reliability.