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under hole size for M10 x 1.0
givemethebighammer - 12/10/06 at 09:30 PM

Further to previous post does an under hole size of 9mm sound right for tapping to M10 x 1.0 ?

I can only find info on:

M10 x 1.5 = 8.5mm
M10 x 1.25 = 8.75mm

so logically M10 x 1.0 = 9mm ?

the_fbi - 12/10/06 at 09:36 PM

afaik for all metric threads:
hole size = thread - pitch

so yip, 9mm for M10 x 1

flak monkey - 12/10/06 at 09:43 PM

quote:
Originally posted by the_fbi
afaik for all metric threads:
hole size = thread - pitch

so yip, 9mm for M10 x 1


Yep, that works as a rough guide. But at the end of the day it depends on the material you are tapping as well, you might find for harder or softer materials 0.1mm smaller or larger can result in a better thread being cut.

David

RichardK - 12/10/06 at 10:12 PM

I have a usefull little on chart on my www, (the www button below!)

Regards

Rich

scutter - 12/10/06 at 11:32 PM

I use THIS site when i need to work out which hole size to drill.

ATB Dan.

SeaBass - 13/10/06 at 07:15 AM

Get hold of Zeus Precision pocketbook... If you knew everything it covers off by heart you be very useful indeed!

Cheers

givemethebighammer - 13/10/06 at 06:53 PM

thanks people 8.9mm hole it is