Gardner Spring 634C-SS Extension Spring 0.675in Od Stainless

Product Description

The GARDNER SPRING 634C-SS is a stainless steel extension spring designed to store and release energy under tensile load in mechanical assemblies and equipment. With an outside diameter of 0.675 inches and a wire diameter of 0.048 inches, this spring handles a maximum work load of 5.24 pounds at a spring rate of 2.28 pounds per inch. The plain finish stainless steel construction resists corrosion in humid or wet service environments. It is typically installed by mechanical technicians, equipment assemblers, and trade professionals maintaining HVAC components, valve actuators, damper linkages, or similar mechanical systems requiring controlled return force.

This extension spring suits residential and light commercial applications where a compact, corrosion-resistant tensile spring is required. Its 0.675-inch outside diameter and 4-inch overall length make it a practical fit for space-limited assemblies. The stainless steel material holds up in environments where moisture, cleaning agents, or outdoor exposure would degrade carbon steel springs. This package includes 3 pieces, making it suitable for replacement stock or small repair jobs.

Key Features

• Stainless steel construction for corrosion resistance in wet or humid environments
• Maximum work load of 5.24 pounds with a spring rate of 2.28 pounds per inch
• Outside diameter of 0.675 inches and wire diameter of 0.048 inches for compact fitment
• Overall length of 4 inches suits space-limited mechanical assemblies
• Plain finish requires no additional surface treatment before installation
• Sold in a package of 3 pieces for replacement or service stock

Compatibility

Designed as an OEM-style replacement extension spring for mechanical assemblies requiring a 0.675-inch outside diameter tensile spring with a 5.24-pound maximum load rating.

Installation Notes

Extension springs are installed by qualified mechanical or HVAC technicians. Always de-energize and depressurize the associated equipment before removing or installing springs. Use appropriate spring installation tools to avoid over-stretching the spring beyond its rated load, which can cause permanent deformation. Inspect hooks and attachment points for wear or damage before reinstalling.