NZNSML 550 Pcs 28mm Tile Backer Board Washers - Galvanised 4-Claw Insulation Washers for Backer Board, Plasterboard, Insulation Fixing

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Professional fixing solution for builders and DIYers! This pack of 550 pcs NZNSML Tile Backer Board Washers provides reliable, long-lasting support for all your construction projects.

Made from quality galvanised iron with zinc finish, these 28mm external tooth lock washers offer excellent corrosion and wear resistance. They will not easily deform and can be used for demanding jobs.

Why Choose 4-Claw Design?
The ingenious 4-prong / 4-claw design bites securely into the board, allowing the washer to sit almost flush with the surface. This creates a much stronger bond between layers, prevents delamination or damage to the backer board, and improves overall installation stability.

Specifications:

• Brand: NZNSML
• Quantity: 550 Pcs
• Material: Galvanised Iron
• Outside Diameter: 28mm / 1.10in
• Inner Hole Diameter: 5.7mm / 0.22in (For M5 screws)
• Washer Type: External Tooth Lock / 4 Claw
• Finish: Zinc
• Claw Height: 5mm / 0.19in

Easy to Install:
No complex tools or skills needed. Simply pair with M5 screws and fix with a drill. The washers clamp tightly with a firm grip, saving you time and effort on site.

Wide Application:
Perfect for fixing a variety of panels to frames, walls and floors - including Tile Backer Boards, Insulation Boards, Plasterboard / Gypsum Boards, Composite Boards, Extruded Boards, XPS, and more. Ideal for bathrooms, wet rooms, insulation projects, and general decoration & fixation work.

Bulk 550-pack ensures you have enough for large jobs.