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  1. #1
    White Knuckle Rider
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    Bolt size on my stem?

    Not sure where to post this question, but I want to replace the bolts on my stem and am not sure size to get. I know I've switched them between stems before so I assume they are all the same basic size.

    They have a lot of sizes/ colors here... but not sure what I need, or if there is a better place to get them.

    http://www.torontocycles.com/Selling...num_Bolts.html

    Mods... if this is in the wrong section please move it.
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  2. #2
    Picture Unrelated
    Reputation: zebrahum's Avatar
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    Depends on your stem, which bolts you're talking about, and how long everything is. Things I can tell you for sure: they're metric, and aluminum bolts are a third as strong as steel with a lower fatigue life. Not exactly what I would be looking for in a stem bolt.

    If you're talking the headset preload bolt, well that doesn't see much force so I can't say there's anything wrong with getting one of those in Al; I think those are M6x30 typically. I guess it depends on your star nut.
    Don't you hate it when a sentence doesn't end the way you think it octopus?

  3. #3
    mtbr member
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    Take one of your existing bolts to a hardware store. You can find the thread size by trying different nuts. Measure the length and then you have it.

  4. #4
    HatrickPatrick
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    I ordered a custom top cap from Purely Custom and the length of the headset bolt they gave me is too short by about 1/2 an inch. Unfortunately the top cap uses a flat head bolt, so my original bolt (which is actually rusting on the inside) is sticking up out of it - horribly ugly. Any one have any ideas on where to track down a flathead top cap bolt (allen socket)?

  5. #5
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    Quote Originally Posted by hatrickpatrick View Post
    Any one have any ideas on where to track down a flathead top cap bolt (allen socket)?
    I would start at the local hardware store. Sounds to me like your starnut is too low. You could always knock that one out and press a new one in.
    Don't you hate it when a sentence doesn't end the way you think it octopus?

  6. #6
    gran jefe
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    fastenal or mcmaster-carr are go-to sources for bolts/screws/etc.

  7. #7
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    Quote Originally Posted by Bill in Houston View Post
    fastenal or mcmaster-carr are go-to sources for bolts/screws/etc.
    This

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