M3-M24 Cap Nut Collection DIN 1578

Collection of metric cap nuts including :

M3, M4, M5, M6, M8, M10, M12, M14, M16, M18, M20, M22, M24.

For general purposes PETG, PLA  works ok. For some demanding application I would choose tougher material.

If the fit is too tight, I would recommend scaling the model by 0.5-1%.