I have just sent a picture of my master cylinder (it wouldn’t accept any text) which shows the banjo bolt going into the master cylinder but there is also the sleeve bolt? holding the pipe into the banjo and this is 7/16 unf. I have just fitted a servo and I was lucky to find a 7/16 unf sleeve bolt which took a 3/16th brake pipe as I couldn’t find a servo which took the 1/4″ brake pipes fitted to my Citroen.
Cheers Richard
Richard Larter