Torque calculation

• Bolting torque to develop 50% Bolt Yield Stress at Nut Factor, K=0.16
• Listed values apply to Never-Seize paste and Fel-Pro lubricant, K=0.16.
• Listed values apply only to ASTM A193 Grade B7 and A193 Grade B16 Stud Bolts.
• The torque values are approved for spiral wound graphite and PTFE filled gaskets, graphite sheet gaskets GHE and GHR types, ring joint, double jacketed and Camprofile gaskets with graphite and PTFE lining.
• The Final Torque Value accounts for 10% bolt relaxation.
• Listed values do not apply to stud bolts and nuts with PTFE or other coatings.

CAUTION: Care should be used when applying a formula for torque/tension relationships. Torque is only an indirect indication of tension. Under/over tightening of fasteners can result in costly equipment failure and/or personal injury.
All data provided is advisory only and its use by anyone is voluntary. The data provided should only be used as a guide. Actual material strengths and fastener conditions may vary.

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Flange Bolting Torque Tables
The torque tables are built on specific assumptions regarding bolt and nut factor. Before using a given torque table, these assumptions should be verified to insure they are appropriate for the specific application...

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