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Thread-Tap Calculator

Thread-Tap Calculator
  • #: 247295
  • Price: $0.99 In Apple Store
  • Category: Reference
  • Updated: 2010-02-03
  • Current Version: 1.0
  • 1.0
  • Size: 0.20 MB
  • Language: English
  • Seller: John Fowler
  • Requirements: Compatible with iPhone, iPod touch, and iPad. Requires iOS 3.0 or later
  • © Copyright (C) 2010. J. J. Fowler, Austin, Tx
  •  Add to Favorite apps



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).

iPhone Screenshots

Thread-Tap Calculator iPhone Screenshot 1
Thread-Tap Calculator iPhone Screenshot 2

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Rated 2/5 based on 3 customer reviews.


5/5 stars

To the point

Just a tap chart, but in a vary user friendly format. Love it

3/5 stars

Mechanical Designer

This could be a useful app if hole diameters were given in decimal instead of just drill size. This app is sort of aimed at machinists, engineers, designers, etc., but we work with decimal dims. Also- Buyer Beware - the photos show inch and metric but the metric is NOT included; just a botton to " BUY" it.

0/5 stars

Waiste of money

Shows pictures of metric sizes, you have to buy metric separate, but it didn't work...


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The information may be outdated (2011-05-03 03:17:13). For actual information go to iTunes

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