TorqueWerte

TorqueWerte, often written as Drehmomentwerte in German, refer to the specified torque values used when tightening fasteners. They indicate the amount of rotational force needed to achieve a reliable preload in a joint, balancing clamping force and potential damage to threads or components. TorqueWerte are applied across engineering fields, including automotive, machinery, and construction, to ensure consistent assembly quality and long-term reliability.

TorqueWerte are usually expressed in units such as Newton-meters (Nm) or pound-feet (lbf-ft), and may appear alongside other factors like preload, lubricant type, and thread condition. The calculation of a target torque considers factors such as thread size, pitch, material strength, lubrication, and the desired clamping force. In practice, torque is measured with calibrated tools such as torque wrenches (click, beam, or digital types) or torque meters, which require regular calibration to maintain accuracy.

Lubrication and cleanliness significantly affect TorqueWerte. Lubricants reduce friction and can lower the effective torque needed for the same preload, while dry or dirty threads may require higher torque. In some cases, manufacturers specify tightening by torque plus angle or use torque values as a baseline for achieving proper preload through controlled deformation.

Standards and quality control for TorqueWerte come from international and national documents, including ISO, DIN, SAE, and other standards bodies. Proper handling includes tool calibration, traceability, and adherence to the specified values to prevent joint failure, leakage, or bolt fatigue.