The National Hardware 24 in. H x 1/4 in. W x 1.5 in. L Black Carbon Steel Mending Plate is engineered for long, reliable reinforcement where it matters most. This slender, high-strength plate is designed to span extended joints, delivering solid support without adding bulk to your project.
Key strengths that differentiate this plate
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Durable carbon steel with a protective black finish for rugged longevity and a clean, professional look.
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Long, narrow profile—measuring 24 inches high by 1/4 inch wide and 1.5 inches long—providing continuous reinforcement along extended seams with fewer fasteners.
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5/16-inch bolt compatibility for secure, built-to-last connections when paired with the right hardware.
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Boxed packaging with a single mending plate ready for quick installation.
Dimensions and material details
Material: carbon steel. Finish: black. Bolt diameter supported: 5/16 inch. Dimensions: 24 inches tall (H) x 1/4 inch wide (W) x 1.5 inches long (L). Package quantity: 1 piece.
Ideal use cases
- Reinforcing tall shelving supports, bookcases, and cabinetry joints where a long, continuous brace provides stability.
- Restoring and stiffening fence rails, gate frames, or door jambs that endure frequent movement or load.
- Structural repairs in wooden framing where a single, elongated plate distributes stress evenly along the joint.
Why choose this plate over alternatives
Rather than piecing together multiple shorter plates, this 24-inch plate offers a single, continuous reinforcement that distributes load along the entire joint. The slim 1/4-inch width and classic black finish keep the hardware discreet while delivering serious strength, making it ideal for interior projects and visible applications where a clean, professional look matters.
Installation tips for best results
Pre-drill pilot holes that accommodate 5/16-inch bolts, align the plate along the joint, and secure at the ends first to prevent drift. Space additional fasteners evenly along the length to maximize load transfer and minimize movement. This approach helps extend the life of the repaired member and keeps the joint stiff under load.
For dependable, purpose-built reinforcement you can trust in wood-and-frame repairs, the National Hardware 24 in. mending plate delivers long-span support, durability, and a clean finish that professionals and DIY enthusiasts rely on.
