# KATO App

> Search tool for helical coil screw thread inserts and tooling with extensive technical data. (iPhone/iPad app by KATO Fastening Systems, Inc.)

- Source: https://appshunter.io/ios/app/kato-app/id1040959765 (this page in markdown: same URL + `.md`)
- Developer: [KATO Fastening Systems, Inc](https://appshunter.io/developer/379001174)
- Category: Business, Productivity
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 52 MB
- Languages: American English
- Released: 2015-09-30
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/kato-app/id1040959765/reviews.md

## What is KATO App?

KATO Fastening Systems, the original inventor and manufacturer of the bi-directional Tangless® CoilThread® insert, is introducing the next version of the most powerful product search App for helical coil screw thread inserts and tools. 

More than just an update, this release is completely new. Optimized for the latest iOS, and is natively compatible for both iPhone and iPad!

Built into the KATO App is the most comprehensive database on helical coil screw thread inserts. With four search options (KATO Part Number, Style & Size, MS/MA Number and NAS/NA Number), the KATO App makes it extremely easy to locate product & technical information, and tooling options for any Tangless or tanged screw thread insert!

Tooling suggestions include:
- Air Tools
- Electric Tools
- Manual Installation Tools
- Removal Tools

Technical information includes:
- Military & Aerospace Part Numbers (NAS1130, NA0276, NASM21209, MS122 & MS124 Series, MA3329, MA3330, MA3331, MA3379, MA3380, and/or MA3381)
- Free O.D. Dimensions
- Number of Free Coils
- Hole Preparation Procedures
- Suggested Drill Sizes
- Drilling Dimensions (per NASM33537)
- Tapping Dimensions (per NASM33537)
and more…

## Key features

- Comprehensive database of helical coil screw thread inserts
- Four search options: Part Number, Style & Size, MS/MA, NAS/NA
- Product and technical information lookup
- Tooling suggestions (Air, Electric, Manual, Removal)
- Detailed technical specifications (dimensions, drill sizes, etc.)
- Compatibility with military and aerospace part numbers

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/kato-app/id1040959765/reviews.md

### 5/5 — Fast, Clean, and Simple

*2017-04-29*

This is a really great App for quickly looking up information on helicoils. I use the KATO App regularly. 

The user interface is very clean. The app is very responsive, results are instantaneous, and using the app is very easy... nice job.

### 5/5 — Excellent Tool for Engineers

*2015-10-07*

This App is very handy for converting MS and NAS part numbers.  I have not been able to find any other App that is as easy to use and as versatile when working with helical coil screw thread inserts and tooling.  The KATO website is also a winner and when combined with the App are high tech tools very useful for design engineers.

### 5/5 — Perfect insert & tooling lookup

*2015-10-01*

This app is great for tooling options for Tangless inserts. Also, really helpful for STI thread info.

## Frequently asked questions about KATO App

### What types of fasteners can I find using KATO App?

KATO App specializes in helical coil screw thread inserts, including both Tangless® and tanged versions. It allows you to search for specific part numbers, styles, sizes, and industry standard designations.

### What technical information does KATO App provide?

The app offers extensive technical data such as free O.D. dimensions, number of free coils, hole preparation procedures, suggested drill sizes, and drilling/tapping dimensions per NASM33537. It also includes compatibility with various Military and Aerospace part numbers.

### What tooling options are suggested by KATO App?

KATO App provides suggestions for various installation and removal tooling, including air tools, electric tools, manual installation tools, and removal tools. This helps users find the right equipment for their specific insert types.

### Is KATO App available on Android devices?

Currently, KATO App is optimized for iOS and is natively compatible for both iPhone and iPad. Information regarding Android availability is not provided in the current data.

### How often is KATO App updated?

The latest version of KATO App is 2.4, which was last updated on August 1, 2017. The app was originally released on September 30, 2015.

### What is the age rating for KATO App?

KATO App has an age rating of 4+. This indicates it is suitable for users of all ages, with no mature content restrictions.

### Does KATO App have ads?

No, KATO App does not contain advertisements. It is a free application designed to provide users with direct access to product information and tooling.

### What is the user rating for KATO App?

KATO App has a perfect rating of 5.0 stars based on one user review. This suggests a highly positive user experience among its current users.

## Version history (last 4 releases)

### 2.4 — 2017-08-01

This app has been updated by Apple to display the Apple Watch app icon.

Bug fixes and performance improvements

### 2.3 — 2017-04-23

From the people of KATO! Thank you for using the KATO App the most powerful search application for helical coil screw thread inserts and tools. Here's what's new on the KATO App 2.3:

-Updated images. Including the KATO Linear Torque Arm which offers an unprecedented smoothness of linear and rotational movements.
-Updated database.
-Bug fixes.
-Performance improvements.

### 2.2 — 2016-07-13

Minor bug fixes

### 2.0 — 2015-09-29

No release notes.

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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.*