what size threads?

couple of thread size questions?

what is the thread that holds the rear hub on the torsion arms at the rear? as I was going to replace with new ones.....but work my usual supplier dont seem to have them in stock :

one looks like it is 12mm ....but the thread is a lot finer than standard 12mm - is it a metric fine thread? UNF? or a special?

the other bolt on the rear hub is close to 16mm - but again is a finer thread - metric fine? UNF?

and last question - what is the thread size on an alternator shaft? ....looks like it could be 12mm but didnt have one to hand to try at the time

thanks

 

And the answer to the last question is M12 x 1.5 pitch

 

FOR info only? that Bentley manual mate gives the nut/bolt size for most of the fastners on buses.(one of the "pluses" re that book)

 

cheers dude,

I've got a Bently but didnt think of looking in there ;D

 

Pay attention to the tensile strengths on the bolts. Likely to be 10.9s or higher.

 

looking at the Bently manual it says 14mm for the hub fixings ....dont think I can get them for free at my normal supplier ;D

I think I'll clean them up and just use new spring and flat washers

 

im pretty sure they,re not m14x1.5 i think they,re metric fine which is m14x 1.25 , not certain but 99% sure as i had to replace a set once before and i couldn't get them from local suppliers.

 

M14 x 1.5 pitch (coarse thread).

 

thanks again guys

 

Don't forget seat belt bolts aren't actually metric - they're UNF </bolt geek off>

 

I think zed was offering a comparison as seatbelt bolts are 11 mm but metric fine