FlangeTorq

FlangeTorq is a fast, offline flange bolt torque calculator built for pipe fitters, mechanical engineers, and industrial maintenance professionals. Select your flange size, pressure class, gasket type, and bolt grade to get accurate torque values instantly.

WHAT IT CALCULATES:

Bolt Torque:
- Target torque (ft-lbs) based on ASME B16.5 flange data
- Nut factor (K value) adjusted for lubricant type
- Bolt size and bolt count per flange class
- Gasket seating stress requirements

Tightening Sequence:
- Multi-pass tightening per ASME PCC-1 guidelines
- Star pattern (cross-bolt) sequence
- Pass percentages: snug, intermediate, and final torque
- Circular verification pass

Supported Configurations:
- Flange sizes from 1/2" to 24"
- Pressure classes: 150, 300, 600, 900, 1500, 2500
- Gasket types: Spiral Wound, Ring Joint (RTJ), Flat Sheet, Kammprofile
- Bolt grades: B7, B7M, B16, L7, L7M
- Lubricants: Bare/Dry, Anti-Seize, Moly Paste, Teflon

KEY FEATURES:

- ASME B16.5 flange dimensional data built in
- ASME PCC-1 tightening sequence guidance
- Nut factor lookup for common lubricants
- Instant results as you adjust inputs
- Clean, job-site-friendly interface
- Works completely offline
- No account or login required

BUILT FOR THE JOB SITE:

Whether you are a pipe fitter, boilermaker, or maintenance technician, FlangeTorq gives you reliable bolt torque values for flanged connections. No more flipping through reference tables or carrying laminated charts — get your torque specs in seconds.