From the table, the static cylinder screw diameter is taken as 20, with M20 thread and M20 hexagonal nut connection.
High-frequency dynamic cylinder screw diameter taken 24, take M24 thread, M24 hexagonal nut
Screw material taken 45 steel tempering, high-frequency dynamic material can be selected 40Cr tempering treatment.
Safety factor are more than 3 times, absolutely safe.