Master cylinder nut thread size...

[Side-show-bob]

Hi all

OK i have messed up.. I'm at work and have to got round to my father-in-laws to look at his master cylinder (its a series 2a brake and clutch combined one) and it is leaking from the bottom nut (one to the clutch). I was intending to borrow a tap and die from work to clean the threads with but the fool that i am, i forgot to check the size. Dose anyone know what size thread it is?

Any help would be appreciated.

Cheers
Rob

 

[thehulkowner]

well its got a 10mm or 7/16th end thats all i know!! there imperial

 

[clivees]

Its the same connector (Female) as goes on the rest of the pipes.
Sorry the parts cat does not list it's dimensions.

 

[CharlesY]

It is almost certainly an Imperial Christian thread - UNF Unified National Fine.

It will not be some heathen metric thread.

Not a lot of people these days have got Imperial taps and dies, and in any event I fear you'll find it difficult to do what you propose.

IN MY OPINION the thread will be in good condition. I suggest you undo the pipe, wind a couple of turns of plumber's PTFE white tape round the end, and put it back.

CharlesY

 

[Side-show-bob]

Cheers

I know what you are saying with the old Tap and Dies, i am fortunate that my dad and granddad were both engineers so i have a tidy supply.

I will use some PTFE tape..

Cheers Rob