Clutch pedal shaft thread size

[stroprock]

Anyone know what size the castellated nut on the clutch shaft is? New clutch pedal came with no nut and the old pedals one doesn't fit??
No.8 in this diagram

[les]

Well if the old nut doesn't fit, it would only be a guess as to what the manufacturer decided to put on! My Guess would be a metric size, possibly M8 or M10. Why not take it with you when you go to an accessory shop for the nut?

[philthehill]

Should be 3/8" BSF.
Have you run a tap through the nut and a die down the threads.
It may just be a picked up thread.
I have just checked the thread on a new pedal assy and that is 3/8 BSF.