On Wednesday 27 June 2018 18:06:52 Peter Blodow wrote:

> Gene,
> there are DIN threads that are printed in bold type in the DIN list,
> the rest is not recommended fur use. Such include M2.3, M3.5, M4.5,
> M7, M9, M11, M14 etc. Except for M3.5 which is widely used by
> electricians for cable fasteners in plugs etc., they are not used by
> industry and therefore the corresponding taps and thread cutters are
> not included in standard sets. The French use M7 in car applications
> but they are widely known for their queerness ;-)
> The reason is that for those unusual sizes there are partially no
> strength recommendations.

That seems odd.

> Peter

Thanks Peter. I'm of the opinion based on the evidence, that at the 
estate sale after I'm gone (if the missus outlives me and I don't get 
off my duff an write a will), they will still be new. Since I can't buy 
the bolt without learning french, the chances of needing to tap that 
size hole are somewhere to the right of .00000000000000squat. :)

> Am 27.06.2018 um 23:47 schrieb Gene Heskett:
> > Greetings all;
> >
> > As I work my way thru the smaller taps in some of my older tap kits,
> > I'm finding a puzzle. I haven't been able, locally or online, to buy
> > an odd sized metric bolt above the even numbered 6.  But I sure have
> > a pile of pristine, never been dirtied 7mmx1.0 and 9mmx1.25's in the
> > tap box now.
> >
> > Is this a conspiracy, and if so whats the point?
> >
> > Puzzles indeed.
> >
> > Thanks all.



-- 
Cheers, Gene Heskett
--
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>

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