Gardner Spring 381 Extension Spring 2.1in Od 332.72lb

Product Description

The GARDNER SPRING 381 is a heavy-duty steel extension spring designed to store and release energy under tensile load. With a 2.1-inch outside diameter, a wire diameter of 0.312 inches, and a spring rate of 179.85 pounds per inch, this spring delivers consistent, predictable force across a wide range of mechanical applications. The galvanized, zinc-plated finish provides corrosion resistance in demanding service environments. This part is sold as a set of 3 pieces per package. Installation is typically handled by mechanical technicians, maintenance professionals, and industrial service contractors working on tension-loaded assemblies.

This extension spring is suited for use in commercial and industrial mechanical systems where repeatable tensile force is required. Typical applications include counterbalance mechanisms, tensioning assemblies, and heavy equipment linkages that demand a high maximum work load. The 332.72-pound maximum load rating makes it appropriate for robust, load-bearing tension applications across a variety of industrial platforms.

Key Features

• 2.1-inch outside diameter for precise fitment in tension-loaded assemblies
• Spring rate of 179.85 pounds per inch for consistent, predictable force output
• Wire diameter of 0.312 inches provides structural integrity under heavy tensile loads
• Maximum work load of 332.72 pounds supports demanding mechanical applications
• Galvanized, zinc-plated steel finish for corrosion resistance in harsh environments
• Sold as a set of 3 pieces per package

Compatibility

Designed as a direct-replacement extension spring for industrial and commercial mechanical assemblies requiring a 2.1-inch outside diameter, 0.312-inch wire diameter, and an 8-inch overall length with a 332.72-pound maximum work load rating.

Installation Notes

Installation of heavy-duty extension springs should be performed by qualified mechanical or maintenance technicians familiar with stored-energy hazards. Always relieve all tension from the assembly before removing or installing springs. Use proper safety tools and personal protective equipment, as extension springs under load can release energy suddenly. Follow applicable equipment manufacturer guidelines and relevant safety standards when servicing tension-loaded mechanical systems.