- Aug 24, 2005
Hi Guys and Gal,I want to plug the front brake pressure port on the master cylinder,what is the thread size, I'm assuming NPT ?,perhaps BSP, please point me in the right direction. Thanks. ride safely. James
L.A.B. said:Also applies to pre-MkIII type.
3/8" UNF being the normal hydraulic thread fitting size for Nortons/Triumphs.