What does Final Torque refer to in the context of fastening?

Final Torque in the context of fastening refers to the concept of achieving the necessary tightness of a fastener to ensure it performs its intended function effectively and safely. This encompasses not only the required torque that is needed to secure the fastener in place but also includes the running torque, which is the amount of torque used to turn the fastener while it is being tightened. The combination of these two factors ensures that the fastener is sufficiently secured while also taking into account the friction and potential resistance encountered during the tightening process.

Establishing the Final Torque is crucial in applications where precision is essential, as insufficient or excessive torque can lead to fastener failure, loosening over time, or even damage to the components being fastened. This makes understanding the relationship between the required torque and running torque fundamental for a quality assurance practitioner in mechanical assembly or other related fields.