Hager 1257 4-1/2 X 4-1/2 US26D Mortise Spring Hinge

Product Description

The HAGER 1257 4-1/2 X 4-1/2 US26D is a full mortise spring hinge designed for standard-weight door applications. It measures 4.5 x 4.5 inches and is constructed from steel with a satin chromium plated finish. The reverse-action spring mechanism automatically returns the door to a closed position after each use. This hinge is mortised flush into both the door edge and the frame, producing a clean installation with no exposed barrel on the pull side. Locksmiths, door hardware installers, and commercial finish carpenters are the primary trades that specify and install this type of hinge.

This spring hinge is suited for interior and light-duty commercial doors where self-closing function is required without a dedicated door closer. Typical applications include corridor doors, storeroom doors, and other commercial or institutional openings that must remain closed per fire or security codes. The standard-weight designation makes it appropriate for hollow-core and solid-core doors within the manufacturer-specified weight range for this hinge size.

Key Features

• Full mortise design installs flush into door edge and frame for a clean, low-profile appearance
• Reverse-action spring provides automatic self-closing function
• 4.5 x 4.5 inch leaf size suits standard commercial door applications
• Steel construction offers durability in high-cycle door openings
• Satin chromium plated finish coordinates with US26D hardware finishes throughout the opening

Compatibility

Designed as an OEM-style replacement or new-installation spring hinge for standard-weight full mortise door preparations measuring 4.5 x 4.5 inches.

Installation Notes

Installation is performed by a qualified door hardware technician or finish carpenter. The door and frame must be properly mortised to the correct depth before the hinge is set; use a sharp chisel and router template for accurate mortise cuts. Adjust spring tension only with the door in place and the hinge fully fastened, using the adjustment tool appropriate for the hinge pin. Follow applicable building and fire codes, including NFPA 80, when installing self-closing hardware on rated openings.