Prime Line Products Sp 9666 Closed Extension Spring 2 Pack

Product Description

The PRIME LINE PRODUCTS SP 9666 is a single-loop closed extension spring designed for general handyman and light-duty mechanical applications. Constructed from durable spring steel with a nickel-plated finish, this spring delivers reliable tension performance in both indoor and outdoor environments. Key dimensions include a 0.25-inch outside diameter, 13/64-inch inside diameter, 3.25-inch length, and a 0.025-inch wire diameter. The maximum safe load is 2.64 pounds with a maximum deflection of 4.1 inches. Each package contains 2 springs, making it a practical option for repair and replacement tasks.

This extension spring suits a wide range of residential and light commercial repair scenarios, including screen doors, cabinet hardware, small appliances, and general mechanical assemblies where a compact closed-loop extension spring is required. The nickel-plated finish provides corrosion resistance, extending service life in humid or outdoor-exposed installations. Installers and handymen working on door hardware, fixtures, or utility mechanisms will find this spring a straightforward replacement or repair component.

Key Features

• Single-loop closed ends for secure attachment in standard hook or loop anchor points
• Spring steel construction rated to a 2.64-pound maximum safe load
• Nickel-plated finish provides corrosion resistance for indoor and outdoor use
• Maximum deflection of 4.1 inches supports moderate extension travel
• 0.025-inch wire diameter with 0.25-inch OD fits compact spring pockets and assemblies
• Sold as a 2-pack for back-to-back repairs or matched replacements

Compatibility

Designed as an OEM-style replacement extension spring for residential and light commercial applications requiring a 0.25-inch OD single-loop closed extension spring with a 3.25-inch body length.

Installation Notes

Extension springs store energy under tension and should be installed and removed with appropriate hand tools to prevent sudden release. Relieve all tension from the existing spring before removal. Verify that anchor points and hooks are rated to handle the spring load before installation. Follow applicable local mechanical and building codes when replacing springs in door or hardware assemblies.