Gardner Spring 37092G Extension Spring 20.7 Lb 0.75 in Od

Product Description

The GARDNER SPRING 37092G is a zinc-plated steel extension spring rated for a maximum work load of 20.7 pounds and a spring rate of 3.1 pounds per inch. With an outside diameter of 0.75 inches and a wire diameter of 0.075 inches, this spring is sized for medium-duty mechanical assemblies where consistent tension and reliable return force are required. The free length measures 5 inches and the maximum extended length reaches 11.03 inches, providing a substantial working stroke. Initial tension is set at 2.0 pounds. This part is sold in a package quantity of three units, making it practical for stocking or multi-point installations.

This extension spring suits residential and light commercial applications including HVAC equipment linkages, damper assemblies, door mechanisms, and general mechanical equipment where a dependable coil extension spring is needed. Trades that commonly work with this spring include HVAC technicians handling damper or actuator hardware, as well as general mechanical and equipment maintenance professionals. The zinc-plated finish provides basic corrosion resistance for use in indoor or sheltered environments.

Key Features

• Maximum work load of 20.7 pounds supports medium-duty tension applications
• Spring rate of 3.1 pounds per inch for predictable, linear force response
• Outside diameter of 0.75 inches fits standard spring pockets and hardware
• Free length of 5 inches with maximum extended length of 11.03 inches for a long working stroke
• Zinc-plated finish provides corrosion resistance in sheltered installations
• Sold in a package of 3 pieces for stocking efficiency

Compatibility

Designed as an OEM-style replacement extension spring for medium-duty mechanical assemblies requiring a 0.75-inch outside diameter coil spring with a 3.1 pounds-per-inch spring rate.

Installation Notes

Installation should be performed by a qualified technician familiar with spring-loaded mechanical assemblies. De-energize and lock out any equipment before removing or installing the spring to prevent unexpected movement under stored tension. Use appropriate pliers or spring installation tools to seat hooks securely without overextending the coil beyond the rated maximum extended length of 11.03 inches. Inspect mating hook hardware for wear or deformation before installing a replacement spring.