Sir Ridesalot wrote:
I have a pair of old Shimano N-600 single pivot brakes I want to put
on my repainted MIELE Uno. These brakes are the nutted type and I want
to use recessed nuts on them. Is there any reason I can't just use a
die to cut more thread on the existing bolt and then cut off the bolyt
shorter for the recessed bolts? Does anyone know what die threading
I'd need for these threads?

Use the medium length rear for your allen front then cut the
long bolt and thread it m6 x 1.0 for the allen rear.

Since the rear brake is oriented to present less danger of a
failure, do it that way and use the factory threaded 'rear'
bolt in front.

Or of course alternately get a Shimano short bolt for the rear.

--
Andrew Muzi
www.yellowjersey.org/
Open every day since 1 April, 1971