3506 Series Lead Screw Square Nut (8mm Lead, 4 Start, 16mm Length)

This specialized nut is intended to index inside the square bore of goRAIL or goTUBE in order to create linear motion as the 8mm lead screw is rotated. The M12 threads offer an attachment point for the 4101 Series Threaded Tube. The slight recesses at the base provide a spot to install magnets.