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App power index: 174 (based on ranks around App Stores today)
Utilities Reference
Developer: superllanboy
Price: 0 free
Current version: 3.0.2, last update: 6 months ago
First release : 15 Aug 2012
App size: 2.17 Mb
4.8 ( 5328 ratings )
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Estimation application downloads and cost

> 3.83k
Monthly downloads
~ $ 1.57k
Estimation App Cost


This application provides the user with detailed information about standard Screw Threads in both metric and imperial values.

Data includes a pictorial representation of the thread form, thread angles, depth of thread, height of thread, thread pitch, radius and crest sizes, major,minor and effective diameters, recommended tapping drill sizes and clearance drill sizes.

Simply double tap the screen to view the thread picker.
Select the thread form standard from the following options:-

BA,
BSW,
BSF,
Metric Coarse,
Metric Fine,
UNC,
UNF,
UNEF,
BSP,
BSPT,
NPT,
Pg,
G,

Select the thread size of interest from the available standard sizes.

The application will display the relevant thread data for screw cutting or thread milling, and the recommended drilling size for tapping operations.

Use the slider control to adjust the drill diameter to an available-sized drill in metric, imperial or gauge standard, and see the corresponding effect on thread engagement, or select a desired thread engagement and see the drilling size recommended.

Toggle between metric and imperial results.

Simple additional information on each thread standard is provided.

The drill standard tab allows the selection of gauge or imperial fractional drills and shows the corresponding metric equivalent.

Ideally suited to Engineers, Machinists, Inspectors, Hobbyists, Apprentices, Designers and engineering students, or others needing to drill and tap, or Screwcut, the application provides convenient reference data without resorting to an engineering handbook or manual.

Future releases will add more thread types and sizes, as well as further functionality to enhance the product.

Suggestions for improvement are gratefully received using the inbuilt report function.
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Available in countries
Country Price
Canada 2.99 CAD
China 15 CNY
France 1.99 EUR
Germany 1.99 EUR
Italy 1.99 EUR
Netherlands 1.99 EUR
Portugal 1.99 EUR
Spain 1.99 EUR
Poland 2.29 EUR
UK 1.99 GBP
India 199 INR
Japan 300 JPY
Korea, Republic Of 3300 KRW
Poland 9.99 PLN
Russia 199 RUB
Turkey 59.99 TRY
USA 1.99 USD
Korea, Republic Of 2.19 USD
Ukraine 1.99 USD
Available for devices
iPhone4, iPad2Wifi, iPad23G, iPhone4S, iPadThirdGen, iPadThirdGen4G, iPhone5, iPodTouchFifthGen, iPadFourthGen, iPadFourthGen4G, iPadMini, iPadMini4G, iPhone5c, iPhone5s, iPadAir, iPadAirCellular, iPadMiniRetina, iPadMiniRetinaCellular, iPhone6, iPhone6Plus, iPadAir2, iPadAir2Cellular, iPadMini3, iPadMini3Cellular, iPodTouchSixthGen, iPhone6s, iPhone6sPlus, iPadMini4, iPadMini4Cellular, iPadPro, iPadProCellular, iPadPro97, iPadPro97Cellular, iPhoneSE, iPhone7, iPhone7Plus, iPad611, iPad612, iPad71, iPad72, iPad73, iPad74, iPhone8, iPhone8Plus, iPhoneX, iPad75, iPad76, iPhoneXS, iPhoneXSMax, iPhoneXR, iPad812, iPad834, iPad856, iPad878, iPadMini5, iPadMini5Cellular, iPadAir3, iPadAir3Cellular, iPodTouchSeventhGen, iPhone11, iPhone11Pro, iPadSeventhGen, iPadSeventhGenCellular, iPhone11ProMax, iPhoneSESecondGen, iPadProSecondGen, iPadProSecondGenCellular, iPadProFourthGen, iPadProFourthGenCellular,

Latest version Thread Data: 3.0.2

Minor update to add links to other Apps
Updated some icons.
Added more detail on some information screens.

Apps Changes History:
  • 6 months ago: New App Version 2.1 ☛ 3.0.2