Kenji
Lv 5

Which is stronger: a fine-thread bolt or a coarse-thread bolt?

I'm adding a spray rig to the back of a Polaris ATV quad bike, and i'd like to know: which one is a stronger bond? fine-thread or coarse-thread? i have both, so it's a toss-up.

anyone know? a web link would be appreciated, too.

Thanks,

-Snow

3 Answers

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  • Anonymous
    9 years ago
    Favourite answer

    Bolt strength (tensile) is indicated by marks on the crown of the bolt.

    The more marks, the higher the tensile strength.

    http://www.unified-eng.com/scitech/bolt/boltmarks....

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  • 9 years ago

    It's the grade that determines the shear strength. Fine thread is used where more precise tightening is desired, such as a cylinder head on an engine. It allows for more even torquing.

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  • Anonymous
    9 years ago

    coarse thread bolt should be stronger

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