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Rear brake bleed nipple - length?


mudguard

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Just bled the brakes and found that the hex on one of my nipples is slightly rounded and so I want to replace it. Not urgently as it's plenty tight enough at the moment.

So from searching here I know that these are M10 x 1 (2003 imperial de-dion, standard rear brakes), but how long are they from the hex to the tip? There seem to be several sizes available.

 

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  • 1 year later...

Thanks Chris.  I removed the nipples last night and filed the hex edges flat, then soaked them in citric acid for a few hours.  They've come out looking much refreshed, and I think Ill refit them.  An observation is that lots of the 'Sierra' nipples on eBay have a slightly different shape to the OEM part, so Im glad I didn't buy before taking them out and inspecting them.     

As an aside, normal vinegar has been my go-to derusting product to bathe small bits in for derusting, normally left overnight or a day with some agitation.  But this powder form citric acid for descaling kettles etc was really quick and effective.  Maybe its powder form allows a stronger solution to be made rather than the ready mixed acetic acid in the vinegar.  

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