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Subject:	Re: <List>[TN] Drill Tolerances
From:	Steve Hodge <[log in to unmask]>
Reply To:	TechNet E-Mail Forum <[log in to unmask]>, Steve Hodge <[log in to unmask]>
Date:	Fri, 2 Dec 2005 14:30:14 -0700
Content-Type:	text/plain
Parts/Attachments:	text/plain (44 lines)

.048 +/-.003 if a.051 is not too sloppy

At 02:32 PM 12/02/2005, you wrote:
>We've had problems with this in the past so maybe the group can help me
>out.
>
>I have a mill-max receptacle pin with a .040 diameter.  The datasheet
>calls for a .042 minimum dia. plated through hole.
>
>Is it better to call out a .048 hole with a +/- .003 drill tolerance?
>(because if you stack the .003 positional tolerance as well, you could
>get down to the min. .042 hole).
>Or is it better to call out a .047 hole with a +/- .002 drill tolerance?
>(because with the .003 positional tolerance you could get down to the
>min. .042 hole).
>
>Or does this depend on which board house you go to as well?
>
>John
>
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