Sourcing a long M7 stem wedge bolt?

[Imazagi]

Hi all,
I found this unmarked (maybe custom?) titanium stem for 1 1/8" threaded steerers I'd like to use on my '95 Marin Pine Mountain build. Sadly it came without hardware. The aluminum wedge from a Marin stem fits nicely, but the Ti stem uses a long bolt that goes all the way up to the cap. I wasn't lucky in finding a full length M7 bolt, as you can see it needs to be about 140mm. Does anyone know where (in Europe?) I could fine one? Or do I need to have one machined?

 

[winjohn]

Are you looking for a titanium bolt or a steel one?

 

[Imazagi]

Ti if possible, but at this point I'm ok with steel.

 

[bikeworkshop]

Can you tap the wedge out to m8, or insert an m6 nut into it?

M7 are famously difficult to source, and long, in ti, I think you'll need to have it made!
In steel it will be challenge enough.
You might find something automotive, but the head is unlikely to be Allen socket.

 

[winjohn]

Would it not be easier to source another wedge and bolt?

 

[Imazagi]

Would it not be easier to source another wedge and bolt?

Yes, if anyone knows of a stem model with a full length bolt and aluminum wedge, it get that one and use the parts. But most light stems I know (Marin and Velocity) use a shelf and short bolt to keep the weight down.

 

[bikeworkshop]

Yes, if anyone knows of a stem model with a full length bolt and aluminum wedge, it get that one and use the parts. But most light stems I know (Marin and Velocity) use a shelf and short bolt to keep the weight down.

The wedge angles aren't necessarily standard, so swapping the wedge needs close comparison

 

[winjohn]

Are you sure about that?

 

[winjohn]

https://www.retrobike.co.uk/threads/marin-holy-grail-titanium-stem-bolt-1995.468405/

Looks like others have had the same problem.

 

[Imazagi]

The wedge angles aren't necessarily standard, so swapping the wedge needs close comparison

Good point, thank you

Are you sure about that?

Oh nice, mine all use a recessed bolt.

https://www.retrobike.co.uk/threads/marin-holy-grail-titanium-stem-bolt-1995.468405/

Looks like others have had the same problem.

Yeah, I saw that. And that was the short one! Finding someone with a lathe is probably the smartest option in the end.