M20 Bolt Torque — 300 ft-lbs (410 N·m)
Reference Class 8.8 torque for a M20 hex bolt: 300 ft-lbs (410 N·m). Lubricated: 225 ft-lbs (308 N·m).
Result
Answer
300 ft-lbs (410 N·m)
Standard
Torque300 ft-lbs / 410 N·m
Torque (lubricated est.)225 ft-lbs / 308 N·m
Bolt ClassClass 8.8
ThreadM20x2.5
Recommended Drive1/2" drive
A M20x2.5 Class 8.8 bolt: reference torque 300 ft-lbs (410 N·m). Lubricated estimate: 225 ft-lbs (308 N·m). Always verify with the fastener manufacturer and use a calibrated torque wrench.
Note
Reference value from published fastener data. Always verify with the fastener manufacturer for critical applications.
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About M20 Bolt Torque
An M20 hex bolt (Class 8.8): reference torque is 300 ft-lbs (410 N·m), with a lubricated estimate of 225 ft-lbs (308 N·m). Standard thread pitch is 2.5mm (coarse) or 1.5mm (fine). Use a 1/2" drive torque wrench. Actual torque depends on thread condition, lubrication, and joint design — always verify with the fastener manufacturer.