Gardner Spring E42C-SS Extension Spring 0.375 in Od Stainless

Product Description

The GARDNER SPRING E42C-SS is a stainless steel extension spring designed for applications requiring reliable tension and corrosion resistance. With an outside diameter of 0.375 inches and a wire diameter of 0.0475 inches, this spring delivers a maximum work load of 10.03 pounds and a spring rate of 3.77 pounds per inch. The overall free length is 3.0 inches, extending to a maximum of 5.03 inches under load. Cross-over end style allows for straightforward hook engagement in mechanical assemblies. Licensed technicians and maintenance professionals working with HVAC equipment, pumps, dampers, and related mechanical systems install this type of spring as a direct service replacement or in custom fabrication scenarios.

This extension spring suits residential and light commercial mechanical applications where a compact, corrosion-resistant tension spring is required. Common install scenarios include damper linkages, equipment access panels, tensioning assemblies, and other mechanical components that require a controlled return force. The plain finish over the stainless steel base material suits environments where moisture or chemical exposure is a concern. Sold in a package quantity of three units per order.

Key Features

• Stainless steel construction provides corrosion resistance for demanding environments
• Cross-over end style for secure, low-profile hook engagement
• Spring rate of 3.77 lb/in for predictable, consistent tension performance
• Maximum extended length of 5.03 inches from a 3.0-inch free length
• Maximum work load rated at 10.03 pounds
• Plain finish - no added coating that could affect dimensional tolerances

Compatibility

Designed as a standard-duty extension spring suitable for mechanical assemblies, damper linkages, and tensioning applications in HVAC, plumbing, and general trade equipment where a 0.375-inch OD cross-over end spring is specified.

Installation Notes

Installation of extension springs should be performed by a qualified technician familiar with spring-loaded mechanical assemblies. Always de-energize and relieve any stored mechanical energy in the system before removing or installing springs. Use appropriate hand tools and eye protection, as extension springs store energy and can release suddenly if mishandled. Verify that the cross-over end hooks are fully seated in their mounting points before returning the assembly to service.