Probably gonna come off as pretty retarded here but when someone

28 twirly-whirlies per inchy-winchy

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28KB, 499x138px

It's how old the metal is

So why can't they just say fine thread or coarse thread?

>>17800054
Why can't they just say "big screw" or "little screw"?

>>17800054
too vague

>>17800002
Best

>>17800054
because in the world of manufacturing and making of mating parts we need to know threads per inch.

>>17800073
Why are all the different thread dimensions necessary? I mean doesn't it just overcomplicate things?

>>17800139
Well, there's material differences between bolts and what they go into, torque specs, the loads they have to endure, etc