Gardner Spring 37058GS Extension Spring 3/8 in Od 3 Pack

Product Description

The GARDNER SPRING 37058GS is a stainless steel extension spring rated for a maximum work load of 15.22 pounds and a spring rate of 12.09 lb/in. The spring measures 2.25 inches in overall free length with a 0.375 inch outside diameter and 0.055 inch wire diameter. It stretches to a maximum extended length of 3.34 inches under load. The plain finish stainless steel construction suits corrosive or high-moisture environments. This spring is sold in a pack of 3 and is installed by HVAC technicians, plumbers, millwrights, and general mechanical contractors in a range of light-duty mechanical assemblies.

This extension spring is suited for residential and commercial mechanical applications where a consistent return force is needed across a controlled range of motion. Typical install scenarios include HVAC damper linkages, access panel latches, small actuator return mechanisms, and similar light-load assemblies. With an initial tension of 2.00 pounds, the spring resists extension until that threshold is exceeded, providing a predictable engagement point. The 2.25 inch free length and 3/8 inch OD fit standard spring pockets and hook mounts common in trade equipment.

Key Features

• Stainless steel construction resists corrosion in wet or chemically active environments
• 12.09 lb/in spring rate provides consistent, linear return force
• Maximum work load of 15.22 pounds suits light-duty mechanical linkage applications
• 2.00 pound initial tension holds position before extension force is applied
• Plain finish works with most standard hook-mount configurations
• Sold in a pack of 3 for service inventory or multi-spring assemblies

Compatibility

Designed as an OEM-style replacement or service-stock extension spring for light-duty mechanical assemblies requiring a 3/8 inch OD, 2.25 inch free length, and 12.09 lb/in spring rate.

Installation Notes

Extension springs should be installed by qualified mechanical or HVAC technicians following the equipment manufacturer's service documentation. De-energize and lock out the equipment before removing or installing any spring under tension. Use appropriate hook tools to seat loop ends securely and verify the spring is fully engaged before returning the assembly to service. Do not stretch the spring beyond its rated maximum extended length of 3.34 inches.