Cap Nut for 4mm screw

Cap nut for 4mm screw. Allows you to screw in 10 or 15mm threaded part. External dimensions from M6 cap nut, which allows the use of standard wrench.
Printed from PETG with default settings 2 walls, 15-20 filling. Theoretically a screw can cut through walls, it is better to use 3.
Theoretically, it is possible to use a screw with a smaller diameter, the tenon with which the thread interacts starts from 2.5(in model, after print probably 3) millimeters.