Gardner Spring 37040GS Extension Spring Stainless Steel

Product Description

The GARDNER SPRING 37040GS is a small-diameter stainless steel extension spring designed for light-duty tensioning applications across mechanical, HVAC, and equipment assembly installations. With a 0.25-inch outside diameter and a 0.031-inch wire diameter, this spring delivers a spring rate of 3.3 pounds per inch and a maximum work load of 4.52 pounds. The plain finish stainless steel construction resists corrosion in exposed or high-humidity environments. This part ships in a package quantity of three, making it suitable for multi-unit repairs or small-batch assembly work performed by mechanical technicians and trade professionals.

The 37040GS is appropriate for applications requiring a compact, low-profile extension spring with a free length of 1.5 inches and a maximum extended length of 2.66 inches. Common installation scenarios include damper linkages, equipment latches, control assemblies, and light tensioning mechanisms found in residential and light commercial HVAC equipment and mechanical systems. The 0.7-pound initial tension ensures consistent preload at the start of extension.

Key Features

• Stainless steel construction with plain finish for corrosion resistance in humid or exposed environments
• Spring rate of 3.3 lb per inch for predictable, linear tensioning force
• Maximum work load of 4.52 pounds with 0.7-pound initial tension preload
• Compact 0.25-inch outside diameter fits tight clearance installations
• Maximum extended length of 2.66 inches from a 1.5-inch free length
• Sold in a package of three pieces for multi-unit or backup inventory use

Compatibility

Designed as an OEM-style replacement extension spring for light-duty mechanical and HVAC equipment assemblies requiring a 0.25-inch OD, 1.5-inch free length stainless steel extension spring with a 3.3 lb per inch spring rate.

Installation Notes

Installation of extension springs should be performed by a qualified technician familiar with the equipment being serviced. Disconnect power and relieve any system tension before removing the existing spring. Use appropriate spring hooks or pliers designed for small-diameter springs to avoid overstretching beyond the maximum extended length of 2.66 inches, which can permanently deform the spring. Do not exceed the rated maximum work load of 4.52 pounds during installation or operation.