# Bolt & Thread Calculators

> Engineering calculators for bolt and thread dimensions and strength. (iPhone/iPad app by Emad Attia.)

- Source: https://appshunter.io/ios/app/bolt-and-thread-calculators/id1033956141 (this page in markdown: same URL + `.md`)
- Developer: [Emad Attia](https://appshunter.io/developer/366401754)
- Category: Productivity, Education
- Price: $4.99
- Rating: 1.00/5 from 3 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 7 MB
- Languages: English, French, German, Italian, Japanese, Korean, Portuguese, Russian, Chinese, Spanish
- Released: 2015-09-03
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/bolt-and-thread-calculators/id1033956141/reviews.md

## What is Bolt & Thread Calculators?

Bolt & Thread Calculators contains the following calculators. 

Bolt/Pin in Single Shear
Bolt/Pin in Double Shear
Thread Shear Area (ISO 898)
External Thread Shear Area
Internal Thread Shear Area
Thread Tensile Stress Area
Thread Tensile Stress Area (for more than 100,000 psi material)
Thread Tensile Stress Area (for less than 100,000 psi material) 
Minimum Thread Engagement 
Minimum Thread Engagement (ISO) 
Fastener/Thread Pitch Circle
Fastener/Thread Ratio and Length
Torque Wrench Adapter - Reduced Arm Calculator
Torque Wrench Adapter - Extended Arm Calculator
Axial Clamp Force
Thread Yield & Tensile Strength
Self Tapping Screw Pull-Out and Torque
Screw Work Gear Axial Force 

Please send us any comments, suggestions or questions through our website.

## Key features

- Bolt/Pin Shear Calculators
- Thread Shear Area Calculators
- Thread Tensile Stress Area
- Minimum Thread Engagement
- Fastener/Thread Ratio & Length
- Torque Wrench Adapter Calculators
- Axial Clamp Force Calculator

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/bolt-and-thread-calculators/id1033956141/reviews.md

### 1/5 — Not user friendly

*2016-09-17*

No graphics, very basic.   Overpriced for what you get.  Rather pay $1 than $5

## Frequently asked questions about Bolt & Thread Calculators

### What types of bolt and thread calculations does Bolt & Thread Calculators offer?

Bolt & Thread Calculators offers a wide range of calculations including bolt/pin shear in single and double shear, various thread shear area calculations (ISO 898, external, internal), thread tensile stress area, minimum thread engagement, fastener/thread pitch circle, and ratio/length.

### Does Bolt & Thread Calculators have ads?

No, Bolt & Thread Calculators is ad-free, providing an uninterrupted user experience for its calculations.

### How much does Bolt & Thread Calculators cost?

Bolt & Thread Calculators is a paid app, available for a one-time purchase of $4.99.

### On which devices can I use Bolt & Thread Calculators?

Bolt & Thread Calculators is compatible with iPhone, iPad, and iPod devices.

### What is the age rating for Bolt & Thread Calculators?

Bolt & Thread Calculators has an age rating of 4+, making it suitable for a wide range of users.

### How often is Bolt & Thread Calculators updated?

The latest version of Bolt & Thread Calculators is 2.8, which was last updated on April 3, 2020. Future updates will depend on developer releases.

### What is the user sentiment for Bolt & Thread Calculators based on ratings?

Based on 3 ratings, Bolt & Thread Calculators has an average rating of 1.0 stars. This indicates a low user satisfaction with the current version.

### Can I integrate Bolt & Thread Calculators with other engineering software?

The provided information does not specify integration capabilities with other software. Users may need to manually input calculated values into other tools.

## Version history (last 5 releases)

### 2.8 — 2020-04-03

- Build with iOS SDK 13.0
- Added LaunchScreen storyboard
- Increased usability of the app

### 2.7 — 2017-06-09

- Minor updates

### 2.6 — 2017-04-25

- Minor updates

### 2.5 — 2017-03-16

- Minor updates

### 2.4 — 2017-02-27

- Minor updates

## More apps by Emad Attia

- [Flow Calculators - Oil & Gas Engineers](https://appshunter.io/ios/app/flow-calculators-oil-and-gas-engineers/id372897824)
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- [Thermodynamics Basics](https://appshunter.io/ios/app/thermodynamics-basics/id377187114)
- [EE Basics - Electrical Engineers and Electricians](https://appshunter.io/ios/app/ee-basics-electrical-engineers-and-electricians/id377195573)
- [Fluid Mechanics Basics](https://appshunter.io/ios/app/fluid-mechanics-basics/id377199076)
- [Mechanics Basics](https://appshunter.io/ios/app/mechanics-basics/id380507336)

All apps by Emad Attia: https://appshunter.io/developer/366401754

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*