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The GARDNER SPRING V40C-SS is a stainless steel extension spring engineered for applications requiring controlled tensile force with reliable return. With a 0.5 inch outside diameter and a wire diameter of 0.0625 inches, this spring delivers a spring rate of 2.05 lb/in and handles a maximum work load of 18.67 pounds. At rest, it measures 8 inches in overall length and extends to a maximum of 15.23 inches under load. It is suited for mechanical assemblies, industrial equipment, and trade applications where a compact, high-cycle tension spring is required. Installation is typically performed by maintenance technicians or mechanical trades.
This extension spring is a single-piece component appropriate for residential, commercial, and light industrial mechanical applications. It is commonly used in door assemblies, equipment linkages, counterbalance mechanisms, and other systems that require a precise tensile return force. The compact 0.5 inch OD makes it compatible with a wide range of tight-clearance mounting configurations. It ships individually and is sold as a single unit.
Designed as an OEM-style replacement or aftermarket extension spring for mechanical assemblies requiring a 0.5 inch OD spring with an 18.67 lb maximum load rating and 2.05 lb/in spring rate.
Extension springs should be installed by qualified mechanical or maintenance technicians familiar with spring-loaded assemblies. Always de-energize or relieve tension from the surrounding mechanism before removing or installing the spring. Use appropriate spring hooks or installation tools to seat the end loops or hooks securely to prevent ejection under load. Verify that the mounting points align with the spring axis to avoid side-loading, which can reduce service life.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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