Source for unusual / specific fastners

General cycling advice ( NOT technical ! )
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simonineaston
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Source for unusual / specific fastners

Postby simonineaston » 7 Aug 2020, 8:35am

I'm looking for a suitable fastner to fix a chain tensioner to the rear mech hanger. The thread is M10 x 1.00mm (aka superfine). Length would be 20mm. I want an allan button head. Ideally I'd like it in titanium. Nothing too specific, then...
Do CUK forum users have a favourite source for their special fastner needs?
(rides: Brompton nano & ever-changing Moultons)

Jdsk
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Re: Source for unusual / specific fastners

Postby Jdsk » 7 Aug 2020, 8:42am


WOT
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Re: Source for unusual / specific fastners

Postby WOT » 7 Aug 2020, 9:00am

Not what the OP wants but McMaster is always worth a look when searching for anything.

https://www.mcmaster.com/screws/system- ... llimeters/

Cyril Haearn
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Re: Source for unusual / specific fastners

Postby Cyril Haearn » 7 Aug 2020, 9:05am

Wuerth might be good for fasteners
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alexnharvey
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Re: Source for unusual / specific fastners

Postby alexnharvey » 7 Aug 2020, 11:27am

If you can compromise on the button head there are various hex head motorbike m10x1.00 titanium bolts that might work.

Brucey
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Re: Source for unusual / specific fastners

Postby Brucey » 7 Aug 2020, 1:55pm

simonineaston wrote:I'm looking for a suitable fastner to fix a chain tensioner to the rear mech hanger. The thread is M10 x 1.00mm (aka superfine). Length would be 20mm. I want an allan button head. Ideally I'd like it in titanium. Nothing too specific, then...
Do CUK forum users have a favourite source for their special fastner needs?


Tres spendy….? you can get something just as lightweight (because it is hollow) but a lot cheaper by using a short length of M10x1 hollow axle and a hub locknut.

If you insist on an allen key fitting this can be improvised or you can use a mounting bolt from a cheap (eg shimano TY series) rear mech; these are usually short, about the right length for a chain tensioner.

cheers
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simonineaston
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Re: Source for unusual / specific fastners

Postby simonineaston » 7 Aug 2020, 5:56pm

Tres spendy….? you can get something just as lightweight (because it is hollow) but a lot cheaper by using a short length of M10x1 hollow axle... If you insist on an allen key fitting this can be improvised.
I'm sure I can stick an allan socket head on a length of hollow axle somehow! Excellent notion! Ta :-)
(rides: Brompton nano & ever-changing Moultons)

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simonineaston
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Re: Source for unusual / specific fastners

Postby simonineaston » 8 Aug 2020, 8:16pm

Just checked I do still have a gas torch and some suitable gas (I do...) so: hollow axle - machine steel, allan socket button - stainless. Am I going to have trouble sticking these two items together with braze? I bet I am!
(rides: Brompton nano & ever-changing Moultons)

Brucey
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Re: Source for unusual / specific fastners

Postby Brucey » 8 Aug 2020, 8:22pm

with the right flux you will be able to braze those together.

cheers
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simonineaston
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Re: Source for unusual / specific fastners

Postby simonineaston » 8 Aug 2020, 9:47pm

horray!! can't wait! I live in a small apartment, fitted with smoke & heat alarms so I think I'll give my mate a call - he's got a great big garage!
(rides: Brompton nano & ever-changing Moultons)

mattsccm
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Re: Source for unusual / specific fastners

Postby mattsccm » 12 Aug 2020, 10:05pm

Could you tap a thread inside the hollow axle to match an allen bolt? Then clean and loctite it in and make sure that ghe m10 thread is always well greased so that moves first.
I would use a close imperial tap and z metric bolt and cross thread the blighter in :)