On 23 January 2016 at 11:18, Peter Blodow <p.blo...@dreki.de> wrote: > Tom, the formula for drilling for metric threads is simple: nominal > thread diameter minus the pitch, e.g. 12 - 1.5 = 10.5 mm for M12, or 6 - > 1 = 5 mm for M6 etc.
This works for any 60 degree thread, so is good for US screws too. You just need to convert TPI to inch pitch. So, 1/2" x 16 tpi? 1/2" - 1/16" = 7/16" tapping drill. It doesn't work so well for proper Whitworth threads. :-) -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
