Mirror extender bolts

[Throttled]

The bolts on my mirror extenders have rusted such that I cannot get them tight any more. They look like this

http://t3.gstatic.com/images?q=tbn:ANd9GcTuYjQgcYEq22C5lFrXnPYV1yNlzgVdU07U3bvE5hsPLM5isWE1nAl8yIbK

What size are the bolts? A search on line does not get an answer.

Thanks

[megawatt]

Look like M8. Are they both right hand thread? Got some stainless if you measure the length, under the Allen head?

[Throttled]

I looked at all the bolts on Ebay, so i would look for M8 x whatever the thread length is?

(They are both turn clockwise to tighten.)

[megawatt]

Probably got a couple somewhere? The bolt in the piccy looks a tad short. What is the max length you can fit in?

[Throttled]

They are 25mm long and I used a 8mm allen key, so is that right I need M8x25 bolts?

[Throttled]

They are 25mm long and I used a 8mm allen key, so is that right I need M8x25 bolts?

 

This is not easy, according to this chart I found

http://www.numberfactory.com/nf%20metri ... 0bolts.htm

if I used an 8mm allen (hex) head then it was a M12 bolt

[megawatt]

An M8 Allen bolt has a 8mm thread, 1.25 pitch. Takes a 6mm Allen key to tighten it up. PM yer addy and I'll stick two in the post tomorrow. Stainless OK?

[Throttled]

PM sent

[megawatt]

Reply sent. Can you measure the diam of the thread, the allen head and the A/F of the hexagon drive (Allen key)?

[Throttled]

The thread is 8mm, the head diameter is 15mm and I don't know what the A/F is

[Throttled]

The offending bolt

http://farm9.staticflickr.com/8058/8179869287_f95cfd499b_c.jpg

http://farm9.staticflickr.com/8487/8179888539_701fccda4f_c.jpg

http://farm9.staticflickr.com/8067/8179885147_99b8b5e79b_c.jpg

[megawatt]

There is a very slim chance that it has a M10 fine thread mate, with a 8mm Allen head. If it is M8 thread and 8mm Allen head, it's the first one I've ever seen !!! will check some M8s and M10s tomorrow.

[Throttled]

Thanks

[Stu]

looks M10 to me!

I have seen M10's with 8mm allen key before i have some on my bike

[Chrissb6]

Hi, l would say it was a 8mm thread, can l suggest you clean up the female tread on the lever first what ever size thread it is with a plug tap. With a steel bolt going into a alloy thread it could be just a case of the tread getting oxidised and thus becoming tight. Hope this helps.

[megawatt]

Seen loads of M10, 8mm allen key bolts Stu. Never seen a M8, 8mm allen key bolt

[Mrbarry]

I have m10x1, m10x1.25 and m10x1.5 SS Cap heads in the garage if you need a couple. Can lend you a tap to suit as long as it comes back too.

[Throttled]

I have given both bits a damn good clean with a rag and WD40 and used locknut and they stayed put today

[Mrbarry]

We if the locknut was an off the shelf item chances are its metric standard not fine.

[Throttled]

Sorry, by lock nut I meant this stuff

http://www.onlinebearings.co.uk/images/P/loctite_243_lg.jpg

[Mrbarry]

Oh lol, I did think it an odd idea to use a lock but but all the same.... Hahaha

Yeah that will stop them coming loose!!