Parametric Drywall Anchors for Machine Screws and Bolts

A collection of 20mm long drywall anchors for metric machine screws, with a FreeCAD (0.20.2) FCStd file to customize the nominal diameter, length, thread pitch, and more.

Tested with M6 and M12 bolts as shown.

Make sure to do a test print with your printer to make sure tolerances are correct. You should be able to hand-tighten bolts all the way into the anchor.

Pilot holes for the anchors should be 2mm greater than the nominal metric diameter of the bolt you want to use (for example, an M6 anchor should use an 8mm hole).