That bolt probably is a TA. I have one on a Pro and it does require a 5 and a 6 mm wrench. There is no tab or knurls on it to keep it from spinning in the frame, so two wrenches are required. Kind of a pain, but it would be a bigger pain if they had used two 5mm wrenches, and I can recall the frustration of dealing with Campy binders that did not have a hex fitting on the fixed side but spun in the lug.
Steve Barner, Bolton, Vermont
> Date: Thu, 18 Dec 2003 16:42:13 -0600
> From: "Steve Kurt" <kurtsj@mtco.com>
> To: Classicrendezvous@bikelist.org
> Subject: Re: [CR]Now: "correct" bike - Raleigh Pro seatpost bolt
> From: Donald Gillies <gillies@cs.ubc.ca>
> "....
> A lot depends upon the condition of the bicycle. If the bicycle looks
> brand spanking new-from-the-box, then I think that weirdo original
> equipment authenticates it. I myself am struggling with the thought
> of making some very strange raleigh seat bolts in stainless :
>
>
http://www.retroraleighs.com/
>
>
> I reply:
> hey, that seatpost bolt looks familiar! Isn't a T.A. model? Looks a lot
> like the sketch in the Cyclo-Pedia catalog:
>
> http://bulgier.net/
> 20bits.gif
>
> that link is a bit awkward... goto:
> http://bulgier.net/
> and click on page 21 "TA cage n bits"
> item 365 looks like what's shown on the Raleigh Pro.
>
> Steve Kurt
> Peoria, IL
> (spent too many youthful hours memorizing the Cyclo-Pedia catalog!)