Gardner Spring 37030G Extension Spring 3/16 in Od 4.3 Lb

Product Description

The GARDNER SPRING 37030G is a small-format extension spring designed for light-duty tensioning and return-force applications across mechanical assemblies, HVAC equipment, and electrical enclosures. It features a 3/16 inch outside diameter (0.1870 inches decimal), a 0.026 inch wire diameter, and a spring rate of 6.1 lb/in. The maximum work load is 4.3 pounds with a maximum extended length of 1.62 inches. This spring is sold in a package quantity of six, making it suitable for service stock and multi-unit repair jobs. Licensed tradespeople and maintenance technicians working on equipment with small spring-return mechanisms will find this part a direct fit for standard light-duty roles.

The 37030G is used in residential and light commercial applications where a compact extension spring is required to maintain tension, close a damper, return a lever arm, or hold a component under consistent load. Its 1 inch free length and inside hook configuration make it compatible with standard spring-hook mounting points found in HVAC damper linkages, control panel doors, and mechanical latching assemblies. This spring ships in packs of six, supporting both single-unit repairs and batch maintenance schedules.

Key Features

• 3/16 inch outside diameter with 0.026 inch wire diameter for precision light-duty tensioning
• 6.1 lb/in spring rate provides consistent, predictable return force
• Maximum work load of 4.3 pounds with maximum extended length of 1.62 inches
• 1 inch free length with inside hook ends for standard hook-mount installations
• Sold in a package of six for service stock efficiency

Compatibility

Designed as an OEM-style replacement extension spring for light-duty mechanical and HVAC-related assemblies requiring a 3/16 inch OD, 1 inch free length spring with inside hook ends.

Installation Notes

Installation is typically performed by HVAC technicians, mechanical service technicians, or licensed tradespeople during equipment maintenance or damper repair. Always de-energize and lock out equipment before replacing spring components. Use appropriate pliers or spring hooks rated for the work load to avoid over-stretching the spring beyond its maximum extended length of 1.62 inches, which can cause permanent deformation. Follow equipment manufacturer procedures for spring attachment points and hook engagement.