Prime Line Products Sp 9670 Extension Spring 3/8 in Od 2pk

Product Description

The PRIME LINE PRODUCTS SP 9670 is a closed single loop extension spring designed for general-purpose tensioning applications in residential and light commercial settings. Constructed from durable spring steel with a nickel-plated finish, this spring delivers reliable load-bearing performance while resisting corrosion for both indoor and outdoor use. Key dimensions include a 3/8 inch outside diameter, 9/32 inch inside diameter, and a 3-3/8 inch body length with a 0.041 inch wire diameter. The spring supports a maximum safe load of 6.52 pounds and allows a maximum deflection of 3.883 inches. This listing includes two springs per pack.

The SP 9670 extension spring is suited for handyman, maintenance, and repair applications where a compact, corrosion-resistant tension spring is required. Typical uses include storm door closers, screen door hardware, garage door assemblies, cabinetry, and general mechanical linkage work. The nickel-plated finish makes it appropriate for locations with moderate moisture exposure, including utility rooms, garages, and outdoor enclosures. Installers and maintenance professionals will find this a practical stock item for common spring replacement tasks across residential and light commercial properties.

Key Features

• Closed single loop ends for secure hook attachment to mounting hardware
• Spring steel construction provides consistent tension and long service life
• Nickel-plated finish resists corrosion for indoor and outdoor use
• Maximum safe load of 6.52 pounds with 3.883 inch maximum deflection
• Compact 3/8 inch OD profile fits standard light-duty spring hardware
• Sold as a 2-pack for convenient replacement or stocking

Compatibility

Designed as a general-purpose OEM-style replacement extension spring for residential and light commercial hardware applications requiring a closed single loop spring with a 3/8 inch outside diameter and 3-3/8 inch length.

Installation Notes

Extension springs store tension energy and should be installed and removed by a qualified technician or experienced handyman using appropriate tools. Always relieve tension from the spring assembly before removing the old spring to prevent injury. Verify that the mounting hooks and anchor points are rated to handle the spring load before installation. Follow all applicable local mechanical and building codes when replacing springs in door or access panel assemblies.