In article ,
Dave wrote:
Some of the smaller makers may well have continued to use the pre-war
threads until much later. Rolls Royce certainly did for some things.

Were they the manufacturers that introduce the 12 point nuts and bolts?

Dunno. I did once own a Bentley, and didn't see any there. One oddity it
did have was left hand thread fixings to the nearside wheels. Just
ordinary studs and nuts - not centre lock.

They were still being used ten years ago on their aero engines.

Right.

Although most of the UK motor industry did adopt the unified threads
I'm not so sure this applied to the US. People there still talk about
AC and AF.

That has prompted me to get my old apprentice books out to check :-)

--
*If you lived in your car, you'd be home by now *

Dave Plowman London SW
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