[APP UPDATE]
Machine Screws Drill/Tap Info Version 1.5.4 released recently – so check Google Play for an update. This is a minor update to the STI database for UNC and UNF screws.
Version 1.5.4 Update:
-Â Updated STI tap drill sizes for UNC & UNF screws per latest Heli-Coil Data
Thanks,
~Jim