Hi,
While servicing a pair of pedals XT M770 pedals, adjusting the nut and locknut with 10 & 7mm spanners I found the locknut on one is split when I went to turn it and it fell apart and now I need a spare.
Spent last night failing to find a lead on this with Google etc, the Shimano tech spec doesn't itemize them, anyone got ideas what size it is, metric or imperial etc, and where can I find one? Have found axle kits for about £20, was hoping to find a spare nut for like 10p!
Anyone any ideas on the nut size and thread (looks very fine) or the cheapest axle kit that carries the same size locknut?
Thanks,
Ade
[url= http://techdocs.shimano.com/media/techdocs/content/cycle/EV/bikecomponents/PD/EV-PD-M770-2704_v1_m56577569830625590.pdf ]The Shimano exploded view tech spec[/url] doesn't itemize the nuts on the axle.
I used a ruler to try and measure the dimensions of the end of the axle spindle, looks to be about 3/16 or 5 mm wide, I think Shimano use imperial sizes on pedals but not sure. The thread pitch looks to be about 48 TPI which is very fine and I can't find anything like 3/16 @ 48 TPI listed anywhere.
Another option might be to find a small nylon nut that I can get to bite on the thread without damaging it, it just needs to work as a lock nut for the cone nut OR buy a replacement axle for £25 or a new pair of M520's with cleats for less than £25, still hoping for that 10p fix!
I've probably got one you can have for nowt.
E-mail me your details and I'll pop it in the post for you.
Thanks for the offer, but i think i am ok, got some advice from the CTC forum.
First class post & ebay means i can confirm that the M5 * 0.5 is the correct thread, the nuts i ordered not much bigger than the original locknut, 8mm across the flats versus 7mm, so i think will reassemble ok.
Thanks for the speedy advice, means i get these pedals back into service for a sensible repair price, half width locknuts from [url] http://www.spaldingfasteners.co.uk [/url] who deserve a plug for being the only people i found selling these online and very fast turnaround.
if you need a narrower nut then look up lock nuts. They are about half the width and are used when double nutting. (might be what you have already?)