Prime Line Products Sp 9637 Extension Spring 1 in Od 3-pack

Product Description

The PRIME LINE PRODUCTS SP 9637 is a single loop extension spring designed for general handyman and light mechanical applications. Constructed from durable spring steel with a nickel-plated finish, this spring resists corrosion and is rated for use both indoors and outdoors. Key dimensions include a 1 inch outside diameter, 19/32 inch inside diameter, 12 inch length, and 0.105 inch wire diameter. The spring carries a maximum safe load of 35.4 pounds and a maximum deflection of 11.7 inches. Each package contains 3 springs. This part is installed by maintenance technicians, handymen, and trade professionals in a wide range of mechanical and structural assemblies.

The SP 9637 is suited for residential and light commercial maintenance tasks where a reliable, corrosion-resistant extension spring is needed. Common applications include door assemblies, screen doors, equipment guards, and general tensioning applications in both indoor and outdoor environments. The single loop end configuration allows straightforward attachment to hooks, pins, or anchor points in standard spring-loaded mechanisms. The nickel-plated finish extends service life in humid or exposed conditions compared to bare steel springs.

Key Features

• Spring steel construction for consistent tensile strength and fatigue resistance
• Nickel-plated finish provides corrosion resistance for indoor and outdoor use
• Single loop ends allow easy attachment to standard hooks and anchor points
• Maximum safe load of 35.4 pounds with 11.7 inch maximum deflection
• Sold in a package of 3 springs

Compatibility

Designed as a general-purpose single loop extension spring suitable for a wide range of residential and light commercial mechanical assemblies requiring a 1 inch OD, 12 inch length spring with single loop ends.

Installation Notes

Extension springs store energy under tension and should be installed and removed only after the mechanism is fully relieved of load. Wear appropriate eye protection when working with extension springs, as sudden release can cause injury. Ensure attachment points and hooks are rated to handle the maximum safe load of 35.4 pounds before installation. Follow applicable local building or mechanical codes for the specific assembly type being serviced.