Flange Bolt Chart
ASME flange bolting, offline
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Offline ASME flange bolting, dimensions, gaskets and pipe data — with a live bolt-circle diagram and star tightening sequence. Search it, don't tap through it.
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
The developer, Harbor Apps LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Contact Info
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Harbor Apps LLC
- Size
- 7.1 MB
- Category
- Reference
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Pro Yearly $48.00
- Copyright
- © 2026 Harbor Apps LLC
