Does anyone know the correct size drill, as well as the correct size reamer, for a .125 straight pin?

Noveske told me they drill the hole at .123 and also use a .123 reamer. Neither of which makes much sense. Usually holes are drilled smaller, then reamed larger, but they gave me the same diameter for both. In addition, I read the hole should be about .1245 for a .125 pin. So, the .123 hole size sounds way undersize too.

Is this why it's so difficult to install Noveske gas block pins? Or was the Noveske employee just mistaken?

Is it a tapered pin?

No, straight pin.



Thanks Matt, do you happen to know if the Noveskes are also reamed to .1247 and their rep was just mistaken?