Checking the Torque Settings

^ A torque setting cannot be rechecked accurately once the fastener has been fixed: additional movement only increases the torque applied.

^ The starting torque to move the already tightened fastener is higher than the consequent running torque and the initial torque setting.

^ If the fastener is self-locking, the torque required to move it is increased by the locking medium. If the nut is loosened prior to retightening, the locking medium will be destroyed in the process, making the fastener unsafe.

^ Once a self-locking fastener has been loosened, it must be removed and discarded, the thread throughly cleaned, and a new fastener fitted.