Opening the iTunes Store.If iTunes doesn't open, click the iTunes application icon in your Dock or on your Windows desktop.Progress Indicator
Opening the iBooks Store.If iBooks doesn't open, click the iBooks app in your Dock.Progress Indicator

iTunes is the world's easiest way to organize and add to your digital media collection.

We are unable to find iTunes on your computer. To download the free app iEngineer by Perfectly Simple Apps LLC, get iTunes now.

Already have iTunes? Click I Have iTunes to open it now.

I Have iTunes Free Download
iTunes for Mac + PC


By Perfectly Simple Apps LLC

Open iTunes to buy and download apps.


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


iPhone Screenshot 1
iPhone Screenshot 2
iPhone Screenshot 3
iPhone Screenshot 4
iPhone Screenshot 5
iPad Screenshot 1
iPad Screenshot 2
iPad Screenshot 3

Customer Reviews

The glass is half bull

3 star=I like the app...

In my humble opinion this has real potential to be a winner.

We interrupt this profession of humility with an important yet judgmental review:
This was designed by a student engineer with little to no practical application of textbook data wasn't it? C'mon.... It's full of superfluous data that just ends up cluttering the display for about 95% of all skilled tradesmen in the field. On the other hand it's much easier to reference than your text during an open book exam. Yep, you guessed it, I'm no engineer and yet I downloaded an app, in that professions namesake. Joke's on me...
Still, for profitability sake, there are more skilled tradesmen than engineers anyway so why not market to them first? e.g. The calculator apps that are basic and scientific when rotated or mode select
1. Why didn't you include a hex flange head in the mix? That's like a margarita without tequila. Don't say it's the same as hex/washer because you better know better.
2. Substrate data anyone? Composites, steel alloys: ferritic/austenitic/martensitic; non-ferrous alloys you get the idea. If I'm going to fasten two identical materials, this will be enough. Unfortunately, it just never works out that way in the thunder dome.
3. Bolt Finish?- phosphor, zinc, chromate, cadmium, Jedi Juice... pertinent factors

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

View in iTunes
This app is designed for both iPhone and iPad
  • Free
  • Category: Reference
  • Updated:
  • Version: 2.3
  • Size: 12.3 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