Prime Line Products Sp 9664 Extension Spring 2 Pack

Product Description

The PRIME LINE PRODUCTS SP 9664 is a single-loop closed extension spring designed for light-duty mechanical and general maintenance applications. Constructed from durable spring steel with a nickel-plated finish, this spring delivers corrosion resistance suitable for both indoor and outdoor use. Key dimensions include a 7/16-inch outside diameter, 3/8-inch inside diameter, and a 2-1/2-inch body length with a 0.028-inch wire diameter. The SP 9664 carries a maximum safe load of 2.64 pounds and a maximum deflection rating of 13.2 inches. Licensed technicians and skilled tradespeople handling equipment closures, panel latches, or tensioning mechanisms will find this spring a reliable OEM-style replacement option. Each package contains 2 springs.

This extension spring suits a wide range of residential and light commercial repair scenarios. Common applications include HVAC access panel latches, equipment covers, plumbing access door closures, and general handyman or maintenance work where a compact, corrosion-resistant extension spring is required. The nickel-plated finish makes it appropriate for installations in areas exposed to moisture or mild environmental conditions, expanding its usable range beyond strictly dry indoor settings.

Key Features

• Single-loop closed-end design for straightforward hook attachment and removal
• Spring steel construction for consistent tension and long service life
• Nickel-plated finish provides corrosion resistance for indoor and outdoor use
• Maximum safe load of 2.64 pounds with maximum deflection of 13.2 inches
• Compact 2-1/2-inch length fits tight clearance installations
• Sold as a 2-pack for immediate backup availability on the job

Compatibility

Designed as a general-purpose OEM-style replacement extension spring for light-duty residential and commercial maintenance applications requiring a 7/16-inch OD closed single-loop spring.

Installation Notes

Extension springs store mechanical energy under tension and should be handled with care during installation and removal. Relieve all tension from the existing spring assembly before disconnecting the old spring. Use appropriate hand tools and eye protection when working with loaded spring mechanisms. Always verify that the replacement spring load rating meets or exceeds the requirements of the application before installation.