Calling it as it is, these switches are almost identical to MiTEC's vandal resistant push button tactile switches.
Nice clicky action with approx half a mm actuation and 300g pressure estimated
They take some skill to solder and can melt easily so go in quick and use low melting point solder. By buying this switch you agree that you won't complain if you overheat and melt this switch.
If you do melt one, then it's possible in some cases to bring the switch back to life by pressing the actuator in and heat up the pins with an iron.
Please refer to the following drawing for detailed dimensions