Gardner Spring 37074G Extension Spring 0.5 in Od 19 Lb

Product Description

The GARDNER SPRING 37074G is a zinc-plated extension spring designed for general mechanical and industrial applications where controlled tension and reliable return force are required. It has an outside diameter of 0.5 inches, a free length of 5 inches, and a maximum extended length of 8.95 inches. The spring carries a maximum work load of 19 pounds and a spring rate of 4.3 pounds per inch, with an initial tension of 2 pounds. Wire diameter is 0.063 inches. These specs make it a well-defined, predictable performer for equipment manufacturers, maintenance technicians, and mechanical contractors sourcing a direct replacement or engineered fit.

This extension spring is suited for use in HVAC equipment, industrial machinery, garage and access panels, damper linkages, and other assemblies that require a compact tension spring with moderate load capacity. The 0.5-inch OD and 5-inch free length fit a range of standard mounting configurations. It is sold in a package quantity of six, making it practical for service fleets and shop stock replenishment. The zinc-plated finish provides basic corrosion resistance for indoor and light-duty applications.

Key Features

• Outside diameter of 0.5 inches fits standard spring mounts and guide rods
• Spring rate of 4.3 pounds per inch provides consistent, predictable load response
• Maximum work load of 19 pounds supports moderate-tension applications
• Maximum extended length of 8.95 inches allows for significant travel range
• Initial tension of 2 pounds keeps the spring closed without external load
• Zinc-plated finish offers corrosion resistance for indoor environments

Compatibility

Designed as an OEM-style replacement or direct-fit extension spring for mechanical assemblies requiring a 0.5-inch OD spring with a 5-inch free length and 4.3 lb/in spring rate.

Installation Notes

Extension springs should be installed by qualified mechanical or HVAC technicians following applicable equipment service documentation. Always de-energize and relieve any stored mechanical energy in the assembly before removing or installing springs. Use appropriate safety glasses and gloves when handling extension springs under tension. Verify hook orientation and engagement depth match the original configuration before returning equipment to service.