Extension Springs — In Stock & Ready to Ship

Lee Spring stocks wide selection of extension springs in standard and instrument series configurations available for immediate shipment. Our in-stock extension spring inventory includes music wire, Type 302 stainless steel, and Type 316 stainless steel options with various end loop configurations. Filter by outside diameter, wire diameter, free length, initial tension, and maximum load to find the exact specification you need easily. All stock extension springs include free standard ground shipping option and a Certificate of Compliance. Learn more about Extension Springs and How to Measure an Extension Spring.