Torque for NPS 38 Class 150 flange

Suggested torque: 2,351 ft-lbs

WARNING: For reference only.

Actual torque value should be reached experimentally. Suggested torque here is relevant only for the input parameters listed below.

Input parameters:

  • K Factor: 0.17
  • Target Yield: 75%
  • Bolt: ASTM A193 B7
  • Flange series: Series A

See bottom of page for calculation details.

Compute torque in seconds.

Download Flange Bolt Chart.

App Store badge for the Flange Bolt Chart appGet it on Google Play
Screenshot of the Flange Bolt Chart app showing a torque calculation.

NPS 38 Class 150 flanges use 32 bolts. View the 32 bolt torque pattern ↗

📣

Calculation details

Calculated using the Nut Factor Calculation of Target Torque as defined in ASME PCC-1, Appendix K. Metric: T = KDF/1000 U.S. Customary: T = KDF/12 where: D = nominal diameter of the bolt, mm (in.) F = target bolt load, N (lb) K = nut factor (k-factor) T = Target Torque, N-m (ft-lb)