In a message dated 3/29/2005 11:47:50 AM Pacific Standard Time,
lpalmer@roundaboutmanor.com writes:
> Careful now! Remember that 5/16" UNC has 18 thread pitch which is the same
> as Whitworth. The difference is that UNC has a 60 degree pitch versus 55
> degrees for Whitworth. So a visual inspection or even threading a nut onto
> the existing shaft will not reveal an obvious difference. But then as a
> machinist you knew that - right?
>
My short shaft is also threaded 5/16-18. I cannot measure the thread pitch.
Yes Lawrie, I'll always been a little short shafted!! ;-)
Terry
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