20pcs M4x20 Hollow Door Fixings – Carbon Steel Cavity Anchors for Aluminum, Steel, Iron & Plastic Sheets – Short Profile Wall Fixings for Mirrors, Shelves & Hollow Doors (Silver)

• 【Precision M4x20 Size for Tight Spaces】These extra-short cavity fixings (20mm length) are ideal for thin hollow doors, metal cladding, or plastic panels where standard anchors won’t fit—perfect for modern interior fixtures in UK homes and offices.
• 【Heavy-Duty Carbon Steel Build】Made from high-strength carbon steel with a silver zinc-plated finish for enhanced corrosion resistance. Durable enough to hold mirrors, shelves, signage, and light fixtures securely—even on hollow surfaces.
• 【Universal Material Compatibility】Works reliably on aluminum-clad doors, sheet steel, iron plates, PVC boards, and other hollow substrates commonly used in UK construction, retail displays, and DIY projects.
• 【Easy Installation with Setting Tool】Includes a dedicated setting tool for quick, tool-free expansion inside the cavity. No drilling oversized holes or struggling with loose fittings—just insert, expand, and secure.
• 【20-Pack Value for Repairs & Projects】Get 20 identical hollow door fixings in one pack—enough for multiple installations, replacements, or keeping spares on hand for future maintenance.

20-Pack M4x20 Hollow Door Fixings – Secure Anchoring for Thin & Hollow Surfaces Struggling to mount fixtures on hollow doors, metal sheets, or plastic panels? These hollow door fixings deliver reliable holding power where traditional screws fail—thanks to their compact M4x20 design and expanding cavity mechanism. Why Choose These Fixings? Engineered for Thin Cavities: At just 20mm long, these short-profile anchors fit perfectly in hollow-core doors, aluminum composite panels, and lightweight partition walls common in UK properties. Strong Carbon Steel Core: Zinc-coated carbon steel resists rust and provides robust tensile strength—ideal for hanging mirrors, floating shelves, coat hooks, or office signage. Works on Multiple Materials: Compatible with aluminum cladding, steel plate, iron sheet, PVC board, and other non-solid substrates without cracking or pull-out. Simple Expansion System: Use the included setting tool to expand the anchor inside the cavity—creating a firm grip that won’t loosen over time. Trusted by DIYers & Tradespeople: Whether you’re updating a bathroom mirror or installing retail displays, these fixings offer professional results without complex hardware. Specifications: Thread: M4 | Length: 20mm | Material: Carbon Steel (zinc-plated) | Colour: Silver | Quantity: 20 pcs Upgrade your fixing solution with these dependable fixings for hollow doors—the smart choice for secure, damage-free mounting on any hollow surface.