Tolerance for 4mm a/f hex socket
Tolerance for 4mm a/f hex socket
(OP)
Hi I am new to this site and was wondering if any body knew the tolerance for a 4mm a/f hex broached hole. The drawing just asks for 4.07 a/f but no tolerance, I know the information is available in the machinist/engineers hand book but I do not presently own a copy, any help on this question would be much appreciated.





RE: Tolerance for 4mm a/f hex socket
I don't have a perfect answer for your question, however I could find some info that seemed to be somewhat close. In "ANSI B4.2-1984 prefered hole basis metric fits" it says that H8/f7 (close running) fit tolerances for a 4mm hole are 4.000-4.018. Hope that helps.
RE: Tolerance for 4mm a/f hex socket