9 replies to this topic

[Matrix]

Does any one know what size thread on the original front handbrake cable was? Its the end that's attached to the handbrake lever itself and has a special nut part number 31G5049 for the nut! The nut has gone NLA so I want to remake it
Ant help would be cool

[Matrix]

I thought some one would know the size its either 1/4 unf or M6? I think is was 1/4unf?

[Phaeton]

I don't know exactly however I would suggest it probably is UNF as most other stuff around the car is.

Alan...

[GraemeC]

I have just tried one of each nuts on a spare cable. Both fit and both are sloppy however I would say M6 is the better of the two.
I also find that a 10mm spanner to be a best fit on the special nut so that would also lead me to M6.

However I doubt they were M6 when originally conceived but they may have been metrificated when the change to single cables happened? Nothing conclusive though I'm afraid.

[Ethel]

It looks unf to me (single cable). Have a look on the web you can probably find some info like treads per inch so help make your mind up.

[GraemeC]

Alternatively Matrix - can you not ask the supplier/manufacturer of the cables you supply or free issue a cable to you proposed nut manufacturer to measure and identify?

[998dave]

I have just tried one of each nuts on a spare cable. Both fit and both are sloppy however I would say M6 is the better of the two.
I also find that a 10mm spanner to be a best fit on the special nut so that would also lead me to M6.

However I doubt they were M6 when originally conceived but they may have been metrificated when the change to single cables happened? Nothing conclusive though I'm afraid.

I can actually confirm, I think, the hand brake adjusting nut does need a 10mm spanner, as they did go metric when they changed the cable mechanism. So should be a standard M6 nut, in fact a pair of them to lock against eachother.

Some late wing mirrors seem to have the same nuts on them from when these were changed.

Dave

[Matrix]

Cheers guys... our supplier on the cables said they are M6 but I didn't think they used M6 stuff back in 1976 which is the change point for the single front cable?

[GraemeC]

But if that's the thread they are using then best to get a nut to suit surely?
Most people buying a nut would probably be buying a cable as well - afterall the only time you are likely to lose them is if you are taking the cable off! If someone insists on putting a new M6 nut on an original cable that *might* be UNF, I think it would still fit OK to do the job.

[duncancallum]

i think there m6 as well the think is with cables manfuctures just use what theyve got/cheaper