Gardner Spring 410C Extension Spring 0.25 in Od 4.56 Lb

Product Description

The GARDNER SPRING 410C is a steel extension spring designed for light-duty tensioning and return applications across mechanical, industrial, and trade service environments. It features a 0.25 inch outside diameter, a 0.0317 inch wire diameter, and a spring rate of 2.84 pounds per inch. The overall free length is 2.0 inches, with a maximum extended length of 4.56 inches and a maximum work load of 4.56 pounds. Double loop ends provide secure attachment to hooks, pins, or anchor points. A zinc-plated finish adds basic corrosion resistance for use in moderately exposed conditions. Licensed technicians and service professionals working on mechanical assemblies, HVAC equipment linkages, and panel hardware commonly use this spring as a replacement or spare component.

This extension spring is suited for residential and light commercial applications where a small-diameter, low-load return spring is required. Typical uses include control linkages, door or panel latch mechanisms, and light tensioning assemblies found in HVAC units, electrical enclosures, and plumbing equipment. The double loop end configuration makes it compatible with a wide range of standard hook and pin anchor styles commonly found in these assemblies. Packaged in a quantity of 3 per package, it is well-suited for service technicians who need on-hand spares during field calls.

Key Features

• 0.25 inch outside diameter for compact, tight-clearance installations
• 2.84 lb/in spring rate for consistent, predictable return force
• 4.56 lb maximum work load rating
• Maximum extended length of 4.56 inches
• Double loop ends for easy attachment to hooks and anchor pins
• Zinc-plated steel finish for basic corrosion resistance

Compatibility

Designed as an OEM-style replacement extension spring for mechanical assemblies requiring a 0.25 inch OD, double loop end spring with a 2.84 lb/in spring rate and up to 4.56 lb maximum load capacity.

Installation Notes

Installation is typically performed by a qualified technician as part of a mechanical assembly repair or replacement procedure. Relieve all tension and de-energize any associated equipment before removing or installing the spring. Use appropriate hand tools and eye protection when stretching or seating extension springs, as stored energy can cause injury if a spring slips during installation. Verify the replacement spring rate and extended length match the original specification before returning the assembly to service.