Master cylinder thread type

[chrisf1]

Hi everyone I am in the process of ordering some new brake pipes from Venhill and need to know the the type of thread and size I need to order the most imprtant being the master cylinder the bike is a 1975 Mk 3 850 roadster can someone please advise me and are they all the same throughout the brake line many thanks everyone Chris

 

[L.A.B.]

The master cylinder, caliper (and other brake line fittings) are 3/8" x 24 UNF.