Automotive Diagnostics, Torque & Trailer Wiring

Why must torque specs be reduced if an anti-seize lubricant is applied to dry-spec fastener threads?

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 Correct IncorrectLubricant dramatically reduces thread friction. Applying full dry-torque to a lubricated fastener exerts excessive tensile bolt stretch that can snap the bolt or strip aluminum threads.

Why must torque specs be reduced if an anti-seize lubricant is applied to dry-spec fastener threads?

• Lubrication reduces thread friction, multiplying clamping force and risking bolt stretching or thread stripping
• Lubricant makes the bolt expand in length
• The torque wrench clicker doesn't work when oiled
• Anti-seize causes galvanic rust