Re: [CR]Stem expander thread

(Example: Framebuilders:Richard Moon)

Date: Thu, 14 Jul 2005 13:05:28 -0700 (PDT)
From: Jerome & Elizabeth Moos <>
Subject: Re: [CR]Stem expander thread
To: Sheldon Brown <>,
In-Reply-To: <p06230919befc59aa7624@[]>

Thanks, Sheldon, somehow I was afraid that would be the answer. Guess I should actually check how many brands that I use have this thread, then decide how many M8 x 1.25 I am likely to use. I guess I just found one more reason to like Nitto.


Jerry Moos Houston, TX

Sheldon Brown <> wrote: Quoth Jerry Moos:
>I've just cut down a Nitto Technomic stem that was too long for a
>headtube on a 53cm frame with the bars set fairly low. Problem is,
>the expander bolt is only threaded the last few cm, so if I cut it
>to match the reduced stem length, I will cut off the threaded
>section. Fortuitously, it happens the Nitto expander uses a
>standard M8 x 1.25 thread and I've found a net site that sells
>stainless M8 x 1.25 socket head cap screws as long as 140mm, which
>should be sufficient. I will probably order one or two, but if
>these will work for most European and Japanese stems, I may order
>several more. Does anyone know if the M8 x 1.25 thread is common to
>all major European and Japanese stem expanders?

We wish!
>Or does it vary from brand to brand? I imagine the older UK stems
>are probably English thread.

The M8 thread is pretty common in Asian stems, but I've never found a European stem that used any identifiable standard threading.

Sheldon "Nittophile" Brown +---------------------------------------------+ | If your bike has drop handlebars, but you | | rarely or never ride on the drops, it's a | | sure sign that your bike is not properly | | fitted or is not properly adjusted! | | See: | +---------------------------------------------+ -- Harris Cyclery, West Newton, Massachusetts Phone 617-244-9772 FAX 617-244-1041 Hard-to-find parts shipped Worldwide Useful articles about bicycles and cycling