Prime Line Products Sp 9669 Extension Spring 2 Pack

Product Description

The PRIME LINE PRODUCTS SP 9669 is a single-loop closed extension spring designed for general-purpose mechanical and hardware applications. Constructed from durable spring steel with a nickel-plated finish, this spring delivers reliable tension and corrosion resistance in both indoor and outdoor environments. Key dimensions include a 9/16-inch outside diameter, 15/32-inch inside diameter, and a 48-inch length with a 0.047-inch wire diameter. The SP 9669 is rated for a maximum safe load of 6.7 pounds and a maximum deflection of 7.42 inches. Each package contains two springs and is suited for installation by maintenance technicians, handymen, and trade professionals requiring a dependable stock extension spring.

This spring is appropriate for a wide range of residential and light commercial applications where an extension spring with a single closed loop end configuration is required. Common use cases include screen doors, storm doors, garage hardware, and general mechanical assemblies that require controlled tension and return force. The nickel-plated finish makes it suitable for humid or outdoor-exposed environments where bare steel would corrode prematurely. Sold as a 2-pack, making it practical for service calls where a backup or paired installation is needed.

Key Features

• Single-loop closed end configuration for straightforward hook or pin attachment
• Spring steel construction rated to 6.7 pounds maximum safe load
• Nickel-plated finish provides corrosion resistance for indoor and outdoor use
• 48-inch length with 7.42-inch maximum deflection range
• 0.047-inch wire diameter for consistent spring rate and durability
• Sold as a 2-pack for back-to-back service or replacement inventory

Compatibility

Designed as a general-purpose OEM-style replacement extension spring suitable for screen doors, storm doors, and other residential or light commercial hardware assemblies requiring a single-loop closed extension spring with a 9/16-inch outside diameter and 48-inch length.

Installation Notes

Extension spring installation should be performed by a qualified technician familiar with spring tension and mechanical hardware. Always relieve any existing tension in the assembly before removing the old spring to prevent injury. Standard hand tools are sufficient for most hook-and-pin attachment points. Ensure the mounting anchors can support the rated load before placing the spring in service.