Tightening torques explained

01 January 2011

By Mark Salmon, Independent Fixings Consultants

Ref: FFM671101/66

Mark Salmon, of Independent Fixing Consultants, is always banging on about the benefits of tightening a fixing to the manufacturers recommended torque because this will induce a clamping force greater than the recommended tensile load so the fixture does not move. But does this mean it can also be used to test fixings? Mark explains in detail how torque relates to the holding power of a fixing in order to understand when we can and cannot use this relationship.