Re: Having the tools don't help much.

Ron Brown /
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Don,

Many moons ago, I could have quoted chapter and verse on Whitworth and BSF hardware.

The short version is that Whitworth was the name of the English standard course thread. British Standard Fine (BSF) was the fine thread. During WW1 or 2, I forget which, BSF was standardized to US fine threads for compatability of war machinery, the only difference was the radius of the thread tip, otherwise they were interchangable.

The interesting feature was that wrenches were labeled according to the thread diameter and pitch. As an example, the same wrench would be labeled 1/4 Whitworth and 5/16 BSF, it would look like a 1/2 inch wrench because that was the size of the nut that fitted these two bolt sizes. Of course, it was not a 1/2 inch. it was some bastard size that Mr. Whitworth had figured out was the correct amount of metal to wrap around that size bolt with that thread. To the best of my recollection, there were no standard wrenches (labeled in England as AF meaning the distance Accross the Flats) which would fit Whitworth and BSF nuts.

Then there was the BA or British Association series which were used mostly for electrical equipment and was similar to the US numbered small bolt standard. Of course this did not have standard size nuts either, you had to use BA wrenches.

And you wonder why the empire collapsed. : )

For future reference, what you call the English system is actually American. England never had anything this rational.

Ron

This single post is part of a larger thread. Start from the top or view this post in context.
Subject Written By Posted
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  Re: HexBolts Sucketh.Re: Reeperette Reeperette 10/31/01 04:42PM
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  Having the tools don't help much.Re: Reeperette Reeperette 11/01/01 12:23PM
  Re: Having the tools don't help much.Re: Jamie Jamie 11/01/01 03:34PM
  Re: Having the tools don't help much.Re: don-ohio don-ohio 11/01/01 03:52PM
  Re: Having the tools don't help much.Re: Ron Brown Ron Brown 11/01/01 04:17PM
  Re: Having the tools don't help much.Re: don-ohio don-ohio 11/01/01 04:49PM
  Re: Having the tools don't help much.Re: Ron Brown Ron Brown 11/01/01 05:41PM
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  Re: Leftovers....Re: don-ohio don-ohio 11/01/01 06:37PM
  Re: Having the tools don't help much.Re: don-ohio don-ohio 11/01/01 06:29PM
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