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By Perfectly Simple Apps LLC

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iEngineer is the most comprehensive database of screw/bolt information that you can find anywhere.

US screws:
-93 different screws from #0 to 4”
-Dimensions for 9 standard head styles
-74 material grades including SAE, ASTM, and other materials

Metric Screws (available as in-app purchase):
-210 different metric screws from M1.0 to M100
-Dimensions for 10 standard head styles for ISO, DIN, BS, and ANSI standards where available
-86 material grades including 12 additional metric grades, SAE, ASTM, and other materials

Displayed values for both the US and Metric screws include:
-Standard dimensions
-Tap sizes
-Clearance hole sizes
-Material strength
-Recommended torque values
-Clamp force
-Shear force
-Head markings display
-3D model of head type
-Standard dimensions of head type

Other features:
-Drill chart with 523 drill bit sizes
-Fraction chart
-Worklight (uses the flash on the iPhone 4/4S to illuminate your work)*
-Copy and paste data values
-Fast and easy unit conversion

Other improvements:
-Completely rebuilt code from the ground up for improved speed and efficiency
-Retina graphics
-Removed ads

If you have any questions please contact us at

*continued use of the flash may dramatically reduce battery life.

What's New in Version 2.3

- 45 New Materials
- New selection interface to change visibility of materials


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Customer Reviews

Great Tool

Intuitive interface with access comprehensive catalog of technical data for imperial and metric threaded fasteners.

As others have noted, the title of the app is far too inclusive considering the focus on threaded fasteners but that doesn't take away from the tremendous value the app delivers.

The last time I upgraded my phone iEngineer was the first app I reinstalled. I don't think there's anything better for engineered deign professionals or students.

Problem with Purchase

I bought this program some time ago, but I have become a problem with the device because he not respond to the backup copy on iTunes I had to download Software for the device and after two attempts to return the purview asked me to purchase once again
Arho you solve this problem
With salutations to you

A Handy Bit of Machinery's Handbook

I agree with the prior reviewer who said this ought to really be called iFastener rather than iEngineer. For what it is it's a very nice simple little app. It contains drilling charts, Fastener information (strengths, minimum and maximum internal and external diameters, tapping hole specs, and so on).

It's handy to have this on ones iPhone or iPad when in the shop. Saves flipping open the Machinery's Handbook. And it looks a lot prettier :-)

View In iTunes
This app is designed for both iPhone and iPad
  • Free
  • Category: Reference
  • Updated:
  • Version: 2.3
  • Size: 11.3 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 6.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

Current Version:
All Versions:

Top In-App Purchases

  1. Metric Screws$1.99