Bolt hole sizes
Bolt hole sizes
(OP)
Is there a standard to be used when specifying bolt holes for metric screw threads? For example do I specify a hole dia of 6.3mm, 6.4mm or 6.5mm for assembling M6 coarse thread bolts? Does anybody know where I can get this information?





RE: Bolt hole sizes
RE: Bolt hole sizes
RE: Bolt hole sizes
available at:
http://www.iso.ch
Regards,
Cory
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
RE: Bolt hole sizes
Metric follows exactly the same principle as imperial, tolerances depend on the classification by fit: close, medium or loose.
Most drafting textbooks discuss this also.
Kenneth J Hueston, PEng
Principal
Sturni-Hueston Engineering Inc
Edmonton, Alberta Canada