Ultimaker 3 and S5 PrintCore Nozzles (AA and BB)
thingiverse
https://github.com/Ultimaker/Ultimaker3 This is not my design, but rather Ultimaker's design from the link above, exported as STL in Fusion 360. These models do not feature any threads, primarily intended for demonstrating the nozzle internals. The threads are M6x0.75 if you're curious about them. Edit: I've uploaded a 0.4 BB core with threads for your reference.
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