[sdiy] what size countersink?

[Andre Majorel]

On 2009-08-21 13:16 -0700, Nick Liebrecht wrote:

> If you are using metric screws, you want a 90 degree countersink
> instead of the 82 degree one.  (At least that's what the guy at the
> tool shop told me last week.)

Don't have the standard but yes, all the ISO screws and
countersinking bits I've seen have a 90° angle.

Something I forgot to mention : large countersinking bits often
have a flat tip that does not make them very suitable for small
screws.

-- 
André Majorel <URL:http://www.teaser.fr/~amajorel/>