Originally Posted by Frontman
(...)the threads were not quite right, so it did not screw on very easily.
Classic Nikkor RF lenses have 1.5 threads pitch. Modern screw-in accessories have 1.75 threads pitch.
Yet it is fully possible to screw some 1.75 filters and hoods on 1.5 lenses front rings if the modern accessories threads are well machined.
The recent series of those third party CNC tilted and vented hoods are better in that respect, for the same price as the former plain or tapered vented hoods - all being sold by the same group of now well known eBay sellers.