Thread-Tap Calculator app for iPhone and iPad

4.6 ( 2406 ratings )

Utilities Reference
Developer: J. J. Fowler

0.99 USD

Current version: 1.0, last update: 7 years ago
First release : 03 Feb 2010
App size: 158.6 Kb

Calculate the proper tap and die drill size for all the most commonly used sizes of screws.

Lookup drill sizes when working with course thread, fine thread, as well as national pipe thread (NPT).