National Mfg N351-496 Black Steel Corner Brace 3 in 5 Pack

Product Description

The NATIONAL MFG/SPECTRUM BRANDS HHI N351-496 is a black powder coated steel corner brace designed to reinforce 90-degree angles in structural and finish carpentry applications. Each brace measures 3 inches in overall size with a leg width of 2.4 inches and a material thickness of 1/8 inch. The square shape distributes load across a wider surface area, making it suitable for heavier or wider building materials where a standard L-bracket may not provide sufficient stability. Single bolt holes on each leg simplify fastener placement and speed up installation. Rounded corners give a clean finished appearance when the brace is left exposed. Sold as a pack of 5.

This corner brace is used in both residential and light commercial construction and repair work. It applies to the inside or outside of a corner, giving installers flexibility depending on whether the reinforcement needs to be concealed or surface-mounted. Typical applications include framing reinforcement, shelving, furniture repair, cabinet construction, and general millwork where a rigid 90-degree joint is required. The black powder coat finish provides corrosion resistance suitable for interior use and protected exterior environments. Carpenters, general contractors, and maintenance technicians commonly stock this type of hardware for repetitive fastening tasks.

Key Features

• Black powder coated steel construction for durability and corrosion resistance
• 3-inch size with 2.4-inch leg width and 1/8-inch material thickness
• Square shape increases contact area for greater joint stability on wider materials
• Single bolt holes on each leg for straightforward fastener placement
• Applies to inside or outside corners for installation flexibility
• Rounded corners deliver a clean appearance in visible applications

Compatibility

Designed as a general-purpose corner brace for use with standard framing lumber, plywood, MDF, and similar building materials requiring a reinforced 90-degree angle joint.

Installation Notes

Installation is typically performed by carpenters, general contractors, or maintenance technicians using standard hand tools. Ensure the mating surfaces are clean, flush, and square before fastening. Select fasteners appropriate for the base material and load requirements. When installing on finished surfaces, pre-drilling pilot holes helps prevent splitting and improves fastener seating.