UH-1 Mast Nut/Jesus Nut

thingiverse

This is a replica of the main rotor nut from a UH-1 Iroquois/Huey helicopter. The only distinction between this model and the authentic one, apart from its non-metallic construction, lies in the absence of internal threads. This is due to the fact that these threads are extremely fine and would be challenging to print with most standard printers.