Qty 100 M6 6mm M6-1.0 Long Metal Threaded Heat Set Screw Inserts for 3D Printing
Rather than adjust designs around the limitations of 3D printing (supports, print bed size, etc), divide your parts into separate components that fasten using these inserts and machine screws. These are threaded M6-1.0 with an overall length (OAL) 12.7mm.