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Universal and Specialized Coil Springs for Windows | Constant Force, Replacement & Upgrade Options

Universal and specialized coil springs provide smooth, reliable counterbalance for hung and sliding windows. These constant force balance springs are essential for easy window operation, supporting precise sash movement and reducing wear over time. Find the right replacement or upgrade for your window system with genuine AmesburyTruth parts.
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What Are Universal and Specialized Coil Springs?

Universal and specialized coil springs, also called constant force coil springs, are engineered components used in modern window systems to counterbalance window sashes. This technology supports smooth raising and lowering of windows, reduces operational effort, and helps maintain window alignment over years of use. Universal coil springs are designed to fit a broad range of window types, while specialized springs are tailored for specific models or unique applications.

Key Features and Benefits

  • Made from durable stainless steel for long-lasting tension and corrosion resistance
  • Patented interlocking 1/2" coil spring systems for easy installation and secure fit
  • Compatible with 1-1/4" wide pocket sizes common in many vinyl window frames
  • Available in multiple strength ratings to match different sash weights
  • Support both single and dual coil balance assemblies for flexible repair and upgrade solutions

Use Cases and Compatibility

These springs are most commonly used in single and double hung vinyl windows, but may also be found in select aluminum and wood window applications. Universal coil springs are ideal for standard window repair jobs, while specialized coil springs accommodate unique window balances or heavy-duty applications where extra support is needed. Genuine replacements like AmesburyTruth's constant force springs ensure reliable performance and a precise fit.

For example, the 7.5-pound constant force spring fits many residential sash windows, while heavier options like the PivotTrue 8-pound coil hook spring meet the needs of larger or commercial sash designs. Always match spring weight and size to your window's specific requirements.

Replacement and Installation Tips

To replace a universal or specialized coil spring, first identify the weight rating and pocket width required by your window. Carefully remove the old spring, noting its orientation and attachment points. When installing the new constant force spring, make sure it is seated correctly in the pocket and securely latched to the sash shoe or pivot bar. If you are unsure of your window balance type, compare your current hardware to options like the 4.5-pound universal coil spring or consult with a hardware professional for guidance.

About AmesburyTruth and Genuine Parts

TruthParts is an authorized retailer for AmesburyTruth, a leading manufacturer of window and door hardware. All coil springs listed in this collection are genuine AmesburyTruth parts, ensuring precise fit, reliable performance, and compatibility with top window brands. Choosing authorized replacement parts helps preserve window warranties and ensures consistent operation.

Frequently Asked Questions

  • How do I determine which coil spring weight I need?
    The correct weight is usually printed on your old spring or included in your window's manufacturer documentation. If you are unsure, consult with a professional or provide your window model for expert guidance.
  • Can these springs be used in non-vinyl windows?
    Some specialized coil springs may fit aluminum or wood windows, but always verify compatibility based on pocket size and hardware type.
  • Are your parts genuine AmesburyTruth products?
    Yes, all coil springs in this collection are original AmesburyTruth components, sourced directly as an authorized reseller.
  • What if I need a lighter or heavier spring?
    We stock a range of ratings, including options like the 3.5-pound universal coil spring for lighter sashes and heavier springs for larger windows.

Choose from our wide selection of specialized springs and universal coil springs for reliable, long-lasting window performance.