As I'm going to build a MPCNC and will be using metric screws (what else?), it is inconvenient to fiddle around with a screwdriver between nut and the pla case, to block the nut, and at the sam time, hold a second screwdriver in my third hand to turn the screw.
So here is a new version of the original F-Foot_2018 including a hexagon hold for a good old metric M4 nut after DIN 985.
Update Jul 22 2019:
Loaded up the other parts, wich are required for use of M4 srews and nuts. All parts belong to MPCNC__BURLY_F-25mmOD.