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  1. #1
    Senior Member prschaa's Avatar
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    16 mm Allen wrench needed

    I have many sets of alen wrenches and sockets, from 2mm to 25mm. All of them skip the 16mm for some reason. I can't seem to find one, Sears, Park all of the usual sources except Facom, which will sell me one for $43.00. I need one to tighten the cap on my SRAM crank arm. Anyone have a source?
    Thanks

  2. #2
    use your best eye kenhill3's Avatar
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    A 16 millimeter Allen (hex) wrench, huh? Wow, that IS an odd (large) size. What does Sram have to say about this?

    Sorry, don't have a source for the Allen key.
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    `````````````` CaptainCool's Avatar
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    Could you find a hex bolt with a 16mm head and tighten it by a nut? Make sure you can find a left-hand setup too for getting it loose again.

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    Klaatu barada nikto cascade168's Avatar
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    Yeh, I've never seen a 16mm hex key either.

    But, you might want to look for a 5/8" (= 0.625") hex key. 16mm = 0.6299"

    Since the 5/8" would be only ~0.005 smaller, it would probably work just fine.

    But, that being said, I've never seen a 5/8" hex key ;-(
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    Klaatu barada nikto cascade168's Avatar
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    Quote Originally Posted by CaptainCool View Post
    Could you find a hex bolt with a 16mm head and tighten it by a nut? Make sure you can find a left-hand setup too for getting it loose again.
    I think this is a good idea. I would grind the bolt head as flat as possible. Then thread on a couple of nuts and lock them together. Then put the whole business in a bench vise and turn the crank on it.

    edit: Or, as I previously pointed out, a bolt with a 5/8" head.
    Last edited by cascade168; 11-13-07 at 08:54 PM. Reason: addition
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  6. #6
    Tell them I hate them Peedtm's Avatar
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    The left crank is removed by simply turning the 8mm hex fitting counter-clockwise. The arm includes a "one-key" release system. There is no need to remove the system. The release system is secured with a 16mm hex wrench. The fitting may come loose. If a 16mm hex wrench is not available, substitute the head of a bolt that uses a 16mm head. Another option is a 5/8" head, common on 1/2" SAE threaded bolts. Use the SCW-16 and secure the one-key system into the crank (Figure 5).

    From the Parktools site
    Last edited by Peedtm; 11-13-07 at 09:33 PM. Reason: attribute source

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    Have done about the same thing but used a wide 16mm nut so i could get a regular combo wrench on it

  8. #8
    Senior Member prschaa's Avatar
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    Thanks, that worked well for me. It came loose after I removed the crank. Wonder why 16mm hex is so hard to find and why SRAM decided on that size??

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    Perineal Pressurized dobber's Avatar
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    Quote Originally Posted by CaptainCool View Post
    Could you find a hex bolt with a 16mm head and tighten it by a nut? Make sure you can find a left-hand setup too for getting it loose again.
    Wouldn't have thought of that in a million years.
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    Senior Member DieselDan's Avatar
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    Catapillar likes using 16mm fasteners. Try Harbor Freight, but you may need to buy a whole set. NAPA would be a better source.
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    Geek Extraordinaire sivat's Avatar
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    I'd rather have a bottle in front of me than a frontal lobotomy.

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  12. #12
    A little North of Hell
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    16mm crank cap

    Quote Originally Posted by mtnbiker4791 View Post
    Have done about the same thing but used a wide 16mm nut so i could get a regular combo wrench on it

    +1 weld or loctite a couple of nuts to a 16mm bolt.


    http://www.independent100.com/crank_tools.html

    http://www.superbiketool.com/prod_de...?cat=12&id=156
    Last edited by Soil_Sampler; 11-15-07 at 04:04 AM.
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  13. #13
    WNG
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    Try SK.

  14. #14
    It's an old photo Boss Moniker's Avatar
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    I used the bolt-head option for my truvativs and it worked perfectly.. not even my LBS had a 16mm hex.
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  15. #15
    Senior Member prschaa's Avatar
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    Quote Originally Posted by sivat View Post
    Thanks but...Amdish.com's Price: Currently Unavailable

    The bolt trick worked perfectly, I may just TIG weld the bolt to a cheap 16 mm wrench. Not that I'll be using it it much, it's just one of those things that you like to have when you do need it.

  16. #16
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    Quote Originally Posted by Soil_Sampler View Post
    +1 weld or loctite a couple of nuts to a 16mm bolt.
    You don't have to do either. Just thread two nuts onto the bolt shank and tighten them together hard. Then put your open end or box wrench on the nut closes to the bolt head and the outer nut will keep it from unthreading while you loosen the crank arm.

  17. #17
    Non Tribuo Anus Rodentum and off to the next adventure (RIP) Stacey's Avatar
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    Exactly!

    The $0.37 solution.

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