I have a 1963 Norton Electra.
One of the breaker point pillar bolts has broken off.
I removed the remains, filled the hole, and have ordered new studs.
Question is what size tap do I use to rethread the hole?
Anybody know that?
I’m pretty sure the pillar bolts are the same as the commando, not that I know the thread type, although I’d guess BA but you could meathure them when they arrive?!
2BA is the size you are looking for.
Here is a photo (not to scale) with dimensions.
From memory - the Commado one is different & cannot be used (I tried).