Is there a standard thread size for braze-ons for bikes made in (say) the last ten years? If there isn't a single size, is there a common series?
I'm asking because I've just bought a bottle cage for Mrs Cove's bike and the plastic screws that came with it are too small in diameter for her braze-ons. So I'm left hunting around for a couple of cap screws and wishing I had a "come in handy" tin of miscellaneous fasteners. If I know which threads are likely, I can make up such a pack by visiting my local fastener specialist.
Is there a standard thread size for braze-ons for bikes made in (say) the last ten years? If there isn't a single size, is there a common series?
*Usually* M5 IIRC, but FSVO "usually". For some bizarre reason known only to EBC[1], the braze-ons on my '97 Contour 400 are all some weird imperial size: fortunately the mech workshop here is well supplied with legacy screws, nuts and bolts!
If not M5 they /should/ be "Mn" where 'n' is an integer and I'd be surprised if outside the range 3-6 for this. These are pretty much standard these days, though as above "should" and "are" aren't always quite the same.
Pete.
[1] I suspect along the lines of "we've found this big box of old braze ons... I know, we can stick them on the MTBs as nobody puts and racks and guards on them!" -- Peter Clinch Medical Physics IT Officer Tel 44 1382 660111 ext. 33637 Univ. of Dundee, Ninewells Hospital Fax 44 1382 640177 Dundee DD1 9SY Scotland UK net [email hidden] http://www.dundee.ac.uk/~pjclinch/
Is there a standard thread size for braze-ons for bikes made in (say) the last ten years? If there isn't a single size, is there a common series?
I'm asking because I've just bought a bottle cage for Mrs Cove's bike and the plastic screws that came with it are too small in diameter for her braze-ons. So I'm left hunting around for a couple of cap screws and wishing I had a "come in handy" tin of miscellaneous fasteners. If I know which threads are likely, I can make up such a pack by visiting my local fastener specialist.
In article <[email hidden]>, Will Cove [email hidden] says...
Quoted message said:
Is there a standard thread size for braze-ons for bikes made in (say) the last ten years? If there isn't a single size, is there a common series?
I'm asking because I've just bought a bottle cage for Mrs Cove's bike and the plastic screws that came with it are too small in diameter for her braze-ons. So I'm left hunting around for a couple of cap screws and wishing I had a "come in handy" tin of miscellaneous fasteners. If I know which threads are likely, I can make up such a pack by visiting my local fastener specialist.
Usually M5x0.8 for bottle bosses, mudguard/rack eyes etc. M6x1 for brake bosses, dynamo brackets ...
