UK versus US tool terminology

In the UK a spotface is used to level an uneven surface so that a bolthead or the like sits evenly on an uneven surface . most come with a central
pilot . The pilot being the same diameter as the initial hole drilled .
Question is what is a spotface referred to in the US . By the way it is generally used in a drill not a mill. regards mjh
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Mike,
I think you might be referring to what's termed a "counterbore" in the US. You might take a look at http://www.use-enco.com/CGI/INSRHI?PMSECT00000535 and see if that's what we're talking about.
Take care! Patty
mike hide wrote:

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Thanks that is exactly what I was looking for .regards mike hide "Mizz Patty" <in_msg> wrote in message

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