# BoltSpec Pro — Bolt & Fastener Engineer Tool

> Bolt & Fastener Engineer Tool (iPhone/iPad app by Qixin Net (Beijing) Technology Co., Ltd..)

- Source: https://appshunter.io/ios/app/boltspec-pro/id6762735091 (this page in markdown: same URL + `.md`)
- Developer: [Qixin Net (Beijing) Technology Co., Ltd.](https://appshunter.io/developer/1886626064)
- Category: Utilities
- Price: $1.99
- Age rating: 4+
- Requires: iOS 17.0 · 2 MB
- Languages: American English
- Released: 2026-05-03
- Data updated: 2026-08-24
- User reviews in markdown: https://appshunter.io/ios/app/boltspec-pro/id6762735091/reviews.md

## What is BoltSpec Pro?

Comprehensive tool for mechanical engineers and technicians dealing with bolts, fasteners, and joint design. BoltSpec Pro provides instant access to a vast database of standard bolt specifications, torque calculations, and material properties.

Key Features:
- Extensive Database: Access ISO, SAE, and ASTM standards for metric and imperial fasteners.
- Precision Torque Calculator: Calculate required tightening torque based on bolt grade, size, and lubrication conditions.
- Material Properties: Detailed data on steel grades, tensile strengths, and yield points.
- Unit Conversion: Seamlessly switch between Metric and Imperial units.
- Favorites: Save frequently used fastener specs for quick access.

Perfect for automotive, aerospace, construction, and manufacturing professionals.


## Version history (last 1 release)

### 2.0 — 2026-05-03

No release notes.

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All apps by Qixin Net (Beijing) Technology Co., Ltd.: https://appshunter.io/developer/1886626064

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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 2026-08-24.*