Quote:
Originally Posted by marki
G'day all
Does anyone know the bore size and thread depth for a 90mm x 1.0mm thread? None of my charts or books have reference to this one so any help would be appreciated.
Mark
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Hi,
That would be an Extra Fine series, but no matter the diameter the truncated nominal thread height of a Metric 1.0mm male thread is 0.613mm and a female thread, 0.514mm (full height is 0.866mm) . We can work from there for a 90mm nominal diameter to get for a bore:
Bore size (equivalent to tap drill size) 88.917
Thread depth 0.514
If you stone a little radius on the tip of the thread cutting tool (good practice) this depth will be a tiny bit less. However with a thread this fine it can only be a slight radius, say 0.05.
The standard is here
http://en.wikipedia.org/wiki/File:IS...Dimensions.svg
Cheers