# Bolt Length - (Nominal Length) — Calculate screw length

> Calculates metric coarse screw lengths according to Japanese Industrial Standards. (iPhone/iPad app by mitsunori oishi.)

- Source: https://appshunter.io/ios/app/bolt-length-nominal-length/id1042345193 (this page in markdown: same URL + `.md`)
- Developer: [mitsunori oishi](https://appshunter.io/developer/905649994)
- Category: Productivity, Utilities
- Price: Free with in-app purchases
- Rating: 3.00/5 from 2 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.0 · 6 MB
- Languages: American English, Japanese
- Released: 2015-10-10
- Data updated: 2026-08-02
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/bolt-length-nominal-length/id1042345193/reviews.md

## What is Bolt Length?

This app is an application for calculating the length of the screw.
※:This app does not guarantee the effectiveness of the combination.
※:Use this application at your own risk.

Conforms to the Japanese Industrial Standards (JIS).
Screws are all metric coarse screw.
For mechanical design.
Sorry, Only in Japan.Because using the JIS.

## Key features

- Metric coarse screw length calculation
- Conforms to Japanese Industrial Standards (JIS)
- Designed for mechanical design
- User risk disclaimer

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Hide Ads | $1.99 | one-time |


## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/bolt-length-nominal-length/id1042345193/reviews.md

### 5/5 — 素晴らしい

*2024-05-10, version 1.2.1*

ありがとうございます。
しっかり使わせてもらってます！

### 3/5 — 有効径のボルトも出せるようにしてほしい

*2019-11-19, version 1.0.4*

有効径たのみます

### 3/5 — ワッシャーの厚みが・・・

*2018-06-22, version 1.0.4*

ワッシャーの厚みが変更できればと思います

ハイテンワッシャー等ワッシャーにも
厚さにも種類がありますので

## Frequently asked questions about Bolt Length

### What is Bolt Length used for?

Bolt Length is an application designed to calculate the length of metric coarse screws. It is specifically useful for mechanical design purposes and adheres to Japanese Industrial Standards (JIS).

### Does Bolt Length support screws other than metric coarse screws?

No, Bolt Length currently only supports metric coarse screws. The app's functionality is based on Japanese Industrial Standards (JIS), which are applied to these specific screw types.

### Is Bolt Length available outside of Japan?

The app is currently only available in Japan due to its reliance on JIS standards. Users outside of Japan may find the calculations less relevant or applicable to their local standards.

### What is the rating of Bolt Length?

Bolt Length has a rating of 3.0 stars based on 2 user ratings. This indicates a mixed reception from its current user base.

### How often is Bolt Length updated?

The latest version of Bolt Length is 1.2.1, which was last updated on November 27, 2023. This suggests relatively infrequent but recent updates.

### What devices is Bolt Length compatible with?

Bolt Length is compatible with iPhones, iPads, and iPods. It is designed for iOS devices.

### Does Bolt Length have ads?

Yes, Bolt Length contains advertisements. This is indicated by the 'hasAds' flag being true in its data.

### What is the age rating for Bolt Length?

Bolt Length has an age rating of 4+. This means it is considered suitable for children aged 4 and above.

## Version history (last 5 releases)

### 1.2.1 — 2023-11-27

The startup process has been changed.
Ad skd update.

### 1.2 — 2022-02-01

Add In-App Purchase(Hide ads). Add redo.

### 1.1 — 2019-11-23

Support for dark mode.

### 1.0.4 — 2018-04-11

Add M22.
※Hexagon Socket Head Bolt M22 is according to JIS B 1176: 1988.

### 1.0.3 — 2017-07-17

Sorry,Fixed bug at startup.

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## More apps by mitsunori oishi

- [語呂合わせ電卓](https://appshunter.io/ios/app/id905649991)
- [Ruler - Scale Ruler](https://appshunter.io/ios/app/ruler-scale-ruler/id919130707)
- [MapRuler for paper map](https://appshunter.io/ios/app/mapruler-for-paper-map/id949274313)
- [Camera - Take photos in 3steps](https://appshunter.io/ios/app/camera-take-photos-in-3steps/id1082227790)
- [Ring Sizer for Japan](https://appshunter.io/ios/app/ring-sizer-for-japan/id1090995858)

All apps by mitsunori oishi: https://appshunter.io/developer/905649994

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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 2026-08-02.*