"Bill S." wrote in message
...
In article , says...
For period 1970 to 2000, whatever they are, they are not very common in
Europe. Coarser thread , diam for diam, than the usual European mm and
BA.
Common sizes are about 0.132 in outside diam. , pitch 32 TPI, would they
be
UNC 6 ?
and 0.11 inch od and TPI about 40 , would they be 4 UNC ?
Sounds like 6-32 and 4-40.
Years ago, I worked for an American computer equipment company, and used to
have exactly the same problem with not being able to equate the screws
fitted to the enclosures, to anything available in the UK. I won myself a
right royal bollocking from the UK director of engineering, after I had been
speaking on the phone to one of the design enginering staff in the U.S. I
had phoned him to ask if we could get a stock of the case screws sent over
to us. "Sure" he said. "I guess I could arrange that. What size are the ones
you want ?" "Oh" said I, "about three sixteenths APF". "APF ?" said he.
"What's APF ?" "Why, American **** Fit of course !"
Well, I *was* new to the game and only young. I didn't know much about
America and the good people who live there, and just assumed that our humour
was the same. Didn't do anything like it again though ...
Arfa