Replacing a Screw on a Skate Chassis

My skate chassis was missing a screw. Two of them to be exact.
I’m not talking about the ones that act as axles for the wheels, I mean the ones that hold the chassis together. I looked all over for a replacement, but didn’t come up with anything. I measured the screw and found it was 10mm long, flat head style, with a hex drive of 2.5mm.  The diameter I had to guess on, but luckily I got it right. The size was M4. I ordered a dozen of them online for a couple bucks plus shipping.

I swear, bolts fall off inline skates all the time and they are usually a pain to replace. So now if it ever happens to you, you’ll know what to get. Oh, just FYI this was on a Bauer Tuuk chassis, but I checked a Mission HiLo chassis I had and the bolt was the same. The head had a diameter just a tiny bit bigger than OEM but it didn’t seem to make any difference.


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  1. bgosling said on January 31, 2011

    Thank you! I've been looking for what the hell these screws are for a while now, man, you're a life saver. Thanks again!

  2. Anonymous said on February 11, 2011

    I ended up calling Mission when that happened with mine. I asked if I could order screws and they sent me a whole new chassis for both skates for free! Not saying that would happen with everyone…just another avenue to take. Glad to know the size of the screws…thanks for the info!

  3. Justin said on November 10, 2023

    as a heads up I found this thread after having the same issue. I found some: M4-.70×8 recessed head screws at Lowe’s then added some blue locktight and they worked perfectly. the screw head does stick out a little since it’s not the exact part needed, but the locktight should hold it in place. just in case anyone else is looking for a solution on these 15yr old skates

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