M7 bolt for Bontrager seatpost clamp

I’ve googled this post’s title quite a lot since I snapped off my saddle last week on the way home from work. It turns out that Bontrager like to use very odd sizes of bolts that you local bike shop is unlikely to stock. In fact most people I spoke to were of the opinion I’d have to buy a whole new seatpost. Not so.

After some hunting I settled on a 50mm M7 socket capscrew bolt from Stig’s Stainless Fasteners. I hope this saves someone some time.

This entry was written by Andy, posted on July 31, 2010 at 1:56 pm, filed under Blog and tagged . Bookmark the permalink. Follow any comments here with the RSS feed for this post. Post a comment or leave a trackback: Trackback URL.

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6 Comments

  1. Dan Pipe
    Posted March 6, 2011 at 6:55 pm | Permalink

    I have had the same problem, did Stig’s bolts ever send the item to you?

  2. Andy
    Posted March 7, 2011 at 11:18 am | Permalink

    Yep! Worked a treat!

  3. Baydr
    Posted August 5, 2011 at 2:02 pm | Permalink

    Thanks for this… same thing happened to me earlier this week. Any idea what the name of the bolt this screws in to is called? Must’ve left mine by the side of the road somewhere.

  4. Andy
    Posted August 5, 2011 at 2:07 pm | Permalink

    I’m afraid I don’t! Try giving Stig an email/call they might be able to help!

  5. Ben
    Posted September 7, 2011 at 7:43 pm | Permalink

    Exactly the same thing has just happened to me. Thanks for the tip on where to find a new bolt but I’m wondering if the M7 is inherently too weak given that we have all had them snap from under us? Might be a better idea to get something more substantial?

  6. Andy
    Posted September 7, 2011 at 8:02 pm | Permalink

    M7 is just the size, I think perhaps its the quality of the default bolt. I’ve done another couple of thousand miles since then and had no problems.

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