# Flange Bolt Chart — ASME flange bolting, offline

> Offline ASME flange bolting reference and calculator for pipefitters. (iPhone/iPad app by Harbor Apps LLC.)

- Source: https://appshunter.io/ios/app/flange-bolt-chart/id6795987941 (this page in markdown: same URL + `.md`)
- Developer: [Harbor Apps LLC](https://appshunter.io/developer/1519633346)
- Category: Reference, Utilities
- Price: Free with in-app purchases
- Rating: 5.00/5 from 2 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.0 · 7 MB
- Languages: American English
- Released: 2026-08-15
- Data updated: 2026-08-23
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/flange-bolt-chart/id6795987941/reviews.md

## What is Flange Bolt Chart?

Flange bolting data, instantly, offline.

Flange Bolt Chart puts the ASME reference tables a pipefitter actually needs into one fast, native app — and it works with no signal at all.

LOOK IT UP IN SECONDS
Type "6 300 wn" and go straight to the answer. Search understands nominal pipe size, pressure class, flange type and facing in any order, so you are not tapping through four dropdowns while standing on a scaffold.

WHAT'S INSIDE
• Flange bolting — number of bolts, bolt diameter, wrench size (standard and heavy), bolt hole diameter, drift pin diameter and stud bolt length
• Stud bolt length calculator — the full ASME B16.5 equation with every component editable, so you can see exactly where the number comes from
• Flange dimensions — outside diameter, bolt circle, hub diameter, thickness
• Gaskets — flat ring, full face, spiral wound and ring joint
• Pipe — look up by schedule, or work backwards from a wall thickness
• Bolt threads — UNC and 8UN, with pitch, minor diameter and tensile stress area
• Line blanks and butterfly valve bolting
• Torque values and tightening patterns

SEE THE JOINT
A live bolt-circle diagram draws the actual flange face — the right number of holes, in the right places — and animates the star tightening sequence pass by pass. Pinch to zoom, hand the phone to the crew.

BUILT FOR THE FIELD
• Completely offline. Every table ships inside the app; nothing is fetched.
• Large, high-contrast values you can read with a wrench still in your hand.
• Imperial and metric throughout, switchable everywhere at once.
• Every value cites the standard it came from.

JOB SHEETS
Group the lookups for a tie-in into a named job, then export the whole thing as one clean PDF for the crew or the materials list.

Reference data is drawn from ASME B16.5, B16.47, B16.20, B16.21, B16.48, B36.10M, B1.1 and PCC-1.

All values are guidelines based on published standards and theoretical conditions. Always follow the specifications provided by your client and the equipment manufacturer.

PRO SUBSCRIPTION
Pro Yearly — one year of Pro, $48.00 in the US App Store, local pricing elsewhere. Payment is charged to your Apple ID at confirmation of purchase and renews automatically unless auto-renew is switched off at least 24 hours before the end of the current period. Manage or cancel it any time in your App Store account settings.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://flangeboltchart.harborapps.org/privacy

## Key features

- Offline flange bolting data
- Fast search by pipe size, pressure, and flange type
- Stud bolt length calculator
- Live bolt-circle diagram with tightening sequence
- Job sheet creation and PDF export
- Imperial and metric units

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Pro Yearly | $48.00 | per year |


## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/flange-bolt-chart/id6795987941/reviews.md

### 5/5 — Super useful

*2026-08-21*

Saves recent searches, lets you export groups of searches to a sheet. Saves me so much time.

### 5/5 — Huge time saver!

*2026-08-16*

Fast lookups. Generally nice to have.

## Frequently asked questions about Flange Bolt Chart

### What ASME standards does Flange Bolt Chart use?

Flange Bolt Chart draws reference data from ASME B16.5, B16.47, B16.20, B16.21, B16.48, B36.10M, B1.1, and PCC-1. This ensures accuracy for industry professionals.

### Does Flange Bolt Chart work offline?

Yes, Flange Bolt Chart is completely offline. All necessary tables and data are shipped inside the app, meaning no internet signal is required for access.

### How does the search function in Flange Bolt Chart work?

The search understands nominal pipe size, pressure class, flange type, and facing in any order. This allows for quick lookups without navigating through multiple dropdown menus.

### Can I calculate stud bolt lengths with Flange Bolt Chart?

Yes, the app includes a stud bolt length calculator that uses the full ASME B16.5 equation. All components are editable, allowing users to understand how the final number is derived.

### What are the Pro subscription details for Flange Bolt Chart?

The Pro Yearly subscription costs $48.00 in the US App Store, with local pricing elsewhere. Payment is charged to your Apple ID and renews automatically unless turned off 24 hours before the current period ends.

### How can I manage or cancel my Flange Bolt Chart Pro subscription?

You can manage or cancel your Pro subscription at any time within your App Store account settings. This provides flexibility for users to control their subscription status.

### What is the age rating for Flange Bolt Chart?

Flange Bolt Chart has an age rating of 4+. This indicates it is suitable for a wide range of users, including younger individuals who may be learning about these technical specifications.

### How often is Flange Bolt Chart updated?

The latest version, 1.0, was released on August 15, 2026, with the last update on the same date. This suggests the app is currently stable and has recently received its initial release.

## Version history (last 1 release)

### 1.0 — 2026-08-15

No release notes.

## More apps by Harbor Apps LLC

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- [Social Nedwork](https://appshunter.io/ios/app/social-nedwork/id6739757523)

All apps by Harbor Apps LLC: https://appshunter.io/developer/1519633346

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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 2026-08-23.*