The tolerances for tension springs are defined in accordance with DIN 2097 (DIN EN 15800). Quality grade 1 describes the smallest tolerance zone (higher product price) and quality grade 3 the largest tolerance zone. Our tension springs are manufactured to
Tension spring tolerances
![Tension spring tolerances Shear stress tension spring](https://blog.federnshop.com/wp-content/uploads/Schubspannung_Zugfeder-600x350.jpg)