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Common fixie wheel axle nut sizes?

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Common fixie wheel axle nut sizes?

Old 03-02-20, 04:34 PM
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spectastic
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Common fixie wheel axle nut sizes?

i just got a beater pure fix fixie as a town beater. i want to replace the front wheel axle nuts with security nuts, but I'd like to confirm the actual diameter and tpi of these threads so i can order the right nuts. lady at a bike shop measured them and told me they're 9.5 x 23 tpi, which is a standard that I can't find anywhere. I've tried calling distributors and pure fix, but they either don't pick up or don't know. Still waiting for pure fix to reply back to my email. Meanwhile, I'm wondering what are the standards that these fixie wheel axles typically use.
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Old 03-02-20, 04:36 PM
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AnkleWork
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Apparently they're impossible to measure.
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Old 03-02-20, 05:12 PM
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You really need one of these to measure it correctly.

23 tpi isn't standard. It would be 24 or 26. And 9.5 mm is equivalent to 3/8".
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Old 03-02-20, 05:21 PM
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Do you know what the hubs are?
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Old 03-02-20, 06:50 PM
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Originally Posted by andrewclaus View Post
You really need one of these to measure it correctly.

23 tpi isn't standard. It would be 24 or 26. And 9.5 mm is equivalent to 3/8".
i'll stop by a different shop for a 2nd opinion

Originally Posted by dedhed View Post
Do you know what the hubs are?
don't recognize it.
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Old 03-02-20, 07:46 PM
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they're 3/8" (or 9.5) at 26 tpi. can't seem to find a security nut of that size though. i feel like if i do, they're going to worth half what i paid for the bike.
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Old 03-03-20, 07:31 AM
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Moe Zhoost
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The lady at the bike shop measured them, but then didn't have any nuts to try out? Odd.

I've never seen a front hub with a 9.5 mm axle, but I understand that there are some. The axle I see most frequently is a 9 mm x 1 mm (26tpi). 9.5 mm axles are common on the rear. Whether you have a 9 or 9.5 mm axle at 26 tpi, you should easily be able to find nuts to fit.
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Old 03-03-20, 03:20 PM
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it's actually 3/8", which translates to 9.5 mm. and it's 26 tpi.
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