Thread Data

Thread data is intended to be just like the little book of threading data that every decent machinist has, but conveniently in your pocket all the time.

The app covers many Metric and Imperial thread systems, and is always expanding. Presently, tapping and clearing drills are stated in Metric only (even for imperial thread systems), assuming that the user has access to metric drills in 0.1mm steps.

Thread angle, major and minor diameter information is provided, such as are necessary to enable internal and external screw cutting or thread milling.

The thread systems covered include the following;

* ISO Metric Coarse (M1 - M56, 37 standard sizes)
* ISO Metric Fine (M3F - M30F, 16 standard sizes)
* ISO Metric Special (M1.7S - M32S, 22 standard sizes)
* Unified Coarse (#1UNC - 2 1/4"UNC, 26 standard sizes)
* Unified Fine (#0UNF -1 1/2"UNF, 24 standard sizes)
* British Association (0BA - 16BA, 17 standard sizes)
* British Standard Fine (3/16"BSF - 2 1/2"BSF, 21 standard sizes)
* British Standard Brass (1/8"BSB - 1"BSB, 11 standard sizes)
* British Standard Cycle (1/8"BSC - 1"BSC, 13 standard sizes)
* British Standard Whitworth (1/16"BSW - 2 1/2"BSW, 29 standard sizes)
* Model Engineer (1/8"ME - 1/2"ME, 10 non-standard sizes)