Rearjia 320Pcs Easy Fix Washers, Tile Backer Board Rust-Resistant Insulation Washer for Boards, Thermoboard & Tiles

【Premium Materials】The fix washers are crafted from galvanised iron, offering exceptional resistance to wear, corrosion and rust. Manufactured using an integral moulding process, their surfaces are smooth and seamless, ensuring they are unlikely to break or crack. Once installed, they provide reliable, worry-free performance. 【Versatile Application】When used with nails, tile backer board washer provide a secure grip on substrate surfaces. They are suitable for fixing insulation boards, tile backing boards, plasterboard, composite panels, extruded polystyrene boards, or for securing building panels to frames. 【Countersunk Anti-Ejection】The fix washers features a countersunk design, ensuring the screw head is embedded within the panel while maintaining a flush outer edge for effortless installation of subsequent layers. The perforated design allows adhesive or mortar to adhere fully to the panel surface, minimising the risk of surface delamination or damage. 【Easy Installation】Using appropriately sized nails through insulation washers, the panels can be securely fastened without loosening when installed with an electric drill. This method is particularly suitable for reinforcing insulation layers on both interior and exterior walls. 【Pack Contents】The set comprises 320pcs fix washers, each with an inner diameter of 0.58cm and an outer diameter of 3.5cm. This ample quantity adequately meets everyday fastening requirements.