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Presta Valve Thread?
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Topic: Presta Valve Thread? (Read 4617 times)
Martin109
Presta Valve Thread?
«
on:
25 May, 2010, 09:36:12 am »
Can anyone tell me what this is? It just so happens that a Presta valve collar fits perfectly on the thread of a bolt I'm trying to identify.
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Biggsy
A bodge too far
Twit @iceblinker
Re: Presta Valve Thread?
«
Reply #1 on:
25 May, 2010, 01:07:38 pm »
M6 x 0.8mm, according to the most believable suggestion on
rec.bicycles.tech
.
It may be that your bolt is 0.75mm despite 0.8
seeming
to be a perfect fit. That's a more common size.
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Martin109
Re: Presta Valve Thread?
«
Reply #2 on:
25 May, 2010, 02:42:41 pm »
Thanks, Biggsy.
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robbo6
Re: Presta Valve Thread?
«
Reply #3 on:
25 May, 2010, 02:48:46 pm »
I have just measured one at 6 mm diameter by .75 pitch, which is the old French pre-ISO standard.
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Presta Valve Thread?