Light duty compression springs Die springs features: 1. Spring ends are ground flat square with axle of a spring. 2. High shock resistance. Die springs benefits: 1. Wide range of springs offers you a possibility to find a product that best suits the application. 2. Uniform performance of springs from one batch to the next. 3. Increased fatigue life. 4. Heat resistance up to 230oC. 5. Greater flexibility of applications.