Industrial Springs

Steel Extension Spring

A steel extension spring is a tightly wound helical spring designed to operate under tensile (pulling) forces . It stretches when force is applied and returns to its original shape once the force is removed. These springs are typically equipped with hooks, loops, or custom ends to facilitate attachment in mechanical assemblies. Manufactured from high-strength carbon steel or stainless steel , extension springs are known for their durability, elasticity, and resistance to fatigue , making them ideal for applications that require reliable energy storage and return force. Key Features: Made from high-carbon steel (e.g., music wire) or stainless steel for corrosion resistance. Designed to store mechanical energy and provide a return force when stretched. Available with a variety of hook types (machine, crossover, side loop, etc.). Customizable in wire diameter, coil diameter, free length, and load capacity.