Prime Line Products Sp 9643 Door Closer Spring

Product Description

The PRIME LINE PRODUCTS SP 9643 is a coil closer spring designed for wood screen doors in residential applications. It measures 15/32 inches in outside diameter and 16-3/8 inches in length, with a wire diameter of 0.065 inches and a 21/64-inch inside diameter. The spring carries a maximum safe load of 23.1 pounds and allows up to 25.2 inches of maximum deflection. A nickel-plated finish provides corrosion resistance, making the spring suitable for both interior and exterior door installations. Handymen, carpenters, and general maintenance technicians install this type of closer spring as a direct replacement or new-installation component on standard wood screen doors.

This closer spring is intended for use with wood-framed screen doors in residential settings. It is well suited to entry, patio, and utility screen doors where a self-closing mechanism is needed. The nickel-plated surface holds up to moisture and humidity, so it can be used on screened porches, covered entries, and similar semi-exposed locations. Sold in a package of 10 units, this spring is a practical stock item for property managers, maintenance crews, and hardware supply operations that service multiple doors in a single job or building.

Key Features

• 15/32-inch outside diameter and 21/64-inch inside diameter for standard wood screen door hardware fitment
• 16-3/8-inch length provides consistent closing tension across typical screen door frame heights
• 0.065-inch wire diameter supports a maximum safe load of 23.1 pounds
• 25.2-inch maximum deflection rating accommodates full door swing without overextension
• Nickel-plated finish resists corrosion for indoor and outdoor use
• Packaged in quantities of 10, suitable for multi-door service calls or inventory stocking

Compatibility

Designed as an OEM-style closer spring for wood screen doors requiring a 15/32-inch OD coil spring with standard hook or loop end fittings.

Installation Notes

Installation is typically performed by a handyman, carpenter, or general maintenance technician using standard hand tools. Before installing or replacing the spring, ensure the screen door is properly supported so it does not swing freely during the swap. Attach both hook ends securely to the door and frame anchor points before releasing tension. Inspect the door frame anchor hardware for wear or corrosion and replace as needed to ensure the spring seats properly.