Some years ago there was a thred with three spirals on it. It was indeed
hard to get it on badly.

I guess the self tapping screw was the solution they came up with, cheap and
cheerful
Brian

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On 2/17/19 5:38 PM, Commander Kinsey wrote:
In the 21st century, has someone not invented a screw thread which always
aligns perfectly? Even a simple bottle top never goes on straight, you
have to turn the bloody thing backwards to make it jump into place.

Methinks what you are looking for is called a "cork".

BTW, we teach our children the "turn it backwards" maneuver.