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Seat post clamp bolt threading

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Seat post clamp bolt threading

Old 10-16-11, 06:00 PM
Ellensburg, WA
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Seat post clamp bolt threading

Anyone got an idea on the threading (pitch) on a late 70's Motobecane seat clamp bolt? The current nut has a few corners that have been rounded thus making it hard to tighten it down.
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