HEFTY™ Die Springs — Heavy-Duty Stock, Ready to Ship Springs

Lee Spring's HEFTY™ Die Springs are heavy-duty round wire compression springs engineered for high-stress, high-load applications including stamping and forming dies, industrial presses, and heavy machinery. Available in five force classes — Medium Duty, Heavy Duty, Extra Heavy Duty, and beyond — and stocked in both music wire and chrome-silicon steel for elevated temperature resistance. All HEFTY™ Die Springs are held in active inventory for immediate shipment, with free standard ground shipping options and a Certificate of Compliance included on every order. Learn more about HEFTY™ Die Spring and How to Measure a Compression Spring.

Engineering Notes & Tolerances
Spring Materials, Specifications & Data
Spring Coatings and Surface Treatments