What version of SketchUp are you using? That will help us to know what tools you have available. What have you done so far? These are all M6 for 3D printing. [image: 1762271282620-screenshot-11_4_2025-9_47_02-am.png] Here's an internal M6 thread. [image: 1762278826049-screenshot-11_4_2025-11_52_53-am.png] I modeled all of these using the method I showed in the video I posted here: https://community.sketchucation.com/topic/164552/help-with-a-thread/20?page=1