Tool 01
Bolt Torque Calculator
Estimate the torque required to develop a target bolt stress on a flange stud. Choose the bolt size, material grade, lubrication, and target stress as a percentage of yield. Results are a reference for planning. Always confirm against gasket manufacturer load requirements and the latest revision of ASME PCC-1.
Inputs
Calculated Result
Target wrench torque using T = K x F x D
Disclaimer: This calculator returns a reference value based on the standard T = K x F x D model with published tensile stress areas and ASTM yield strengths. Actual joint makeup should follow the gasket manufacturer's published seating stress, ASME PCC-1 procedures, and any project torque tables. Use a calibrated tool and proper pattern.
For full bolt dimensions and thread reference, see the Texas Flange article on bolt dimensions.
Bolting and Torque References
For stud bolt sizes and torque references by pressure class, see the Texas Flange bolt torque reference. Joint assembly is governed by ASME PCC-1. Follow the bolting and gasket manufacturer's procedure for your joint.
Request a Quote
Send the flange type, size, pressure class, facing and material grade.
Request a Quote