Originally Posted by grifscoots
Well color me ignorant and lazy.
I could have googled it myself huh?
Thanks for the links Grif. I found it interesting reading.
This page I found most informative:
Here's from that page: "For some reason now lost in obscurity, the distance across the flats of Whitworth hex nuts and bolt heads is not nice sensible fractions of an inch, nor is it millimeters, nor does it follow any discernable pattern such as a percentage of the bolt diameter. You are supposed to use special Whitworth sized wrenches. The sizes stamped on Whitworth wrenches refer not to the distance between the flats, but to the diameters of the nuts and bolts they are intended to fit. In practice it turns out you can get away with using metric wrenches in most cases."
If you need any Whitworth tools, I'd certianly recommend you get them from King Dick: Abingdon King Dick is a tool company based in the UK still making Whitworth size tools.
Well, in my own defense I have never owned any British Iron, BSA, Trumpet, Snortin Norton, Jag, or anything else that might have a Whitworth fastener that would require a Whitworth wrench. (Well, there is my Rolls
I was bettin that I actually had a Whitworth wrench, and just didn't know the name for it, but dayem I'm now sure I don't have any such thing. I had thought it might the wrench to tighten the packing seal on the pitman of my sickle bar mower. The mower is a Wood & Smith, made in Canada I think, certianly not the UK.