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Rear Damper bottom bolt threads question?

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McCabe-Thiele (Ted):
The 500 dampers have a threaded plate attached to the rear damper - parts book shows 93000-10032-0A bolt (10 x 32)

Am I right in thinking this is a M10 (1.25 pitch) bolt that has a 17mm spanner head ?

I plan to fit a pair of flanged SS bolts as a replacement.

Bryanj:
Not 17mm head originally, 14mm i think which makes them oddball or as Honda say "special"

Oddjob:
If you want to retain the original look and use a 10mm bolt with a metric fine thread but still keep the 14mm head that's hard to find, however my favourite supplier of stainless bolts does just that. I'd get 10 x 35 and if needed trim them down.

Just in case you didn't know, a set bolt (which he sells a lot of) are usually 30mm and under and are threaded full length. You don't want a set bolt in that location.

https://www.stainlessmiddleton.co.uk/32908-metric-fine-bolts-setscrews

His bolts may be more expensive than some but the heads are polished and have no unsightly writing on. They are also top quality.

deltarider:
The original thread is 'special'. Unfortunately the parts list does not mention this! Decades I ago, when I fitted Koni's, I must have done something wrong, probably by using regular thread bolts. I must have damaged the special thread, which also the Koni's have on the side of the clevis that faces inwards. When I - much later - noticed, I couldn't fasten the bottom of the dampers well, I have solved it by using a few mm longer bolts and adding a nut on its protruding end outside the clevis. The RH side was easy: plenty of space. On the LH side the nut came very close to the sprocket wheel. It didn't touch it, but I didn't feel comfortable with it. So I decided not to risk it and to cut the nut in half. The nut I used has this blue plastic inside to prevent it from coming loose. I don't know the word for it in Englich. In the pic you see the original Honda bolt (CMSNL has them) and the one I now use. The one used actually is a bit longer as shown in the pic. Its head is 17mm where the original is 14mm. I couldn't care less.
I dunno, maybe Honda had this special thread to not have to fit washers.

Toko_Jo:

--- Quote from: deltarider on November 14, 2022, 07:00:01 AM ---The original thread is 'special'. Unfortunately the parts list does not mention this!

--- End quote ---

It's an M10 x 1.25 pitch for gawds sake ::) .. just like all of the other M10 threaded fasteners on Honda bike for the past few eons. And adding a nut is asking for trouble IMHO.

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