Originally Posted by
cyclotoine
Are you referring to thread diameter? All hex fittings on cinelli 1R and 1A are 6mm. Only the pre-1972 1A had 7mm allen fittings for the stem binder bolt.
From the pics it looks like I have an XA (with a conical expander) and a 1A, one is 26.0 the other is 26.4. I'll check the bolts again - I was sure they didn't interchange, but that's probably just my bad memory. There's also a TTT stem in the parts box to confuse me even more (maybe that was the stem I can't find a bolt for???).
Thanks for the link to the 43bikes website - what a neat place to look through!