Package contents 1 pair of toilet seat fittings and fixtures: one screw and one expansion screw Key benefits Secure and stable seat: the expansion screw and rubber bung form a tight grip when bolts are tightened, preventing wobble and shifting Durable construction: expansion screw combines stainless steel and nylon for good shape retention, strength, and resistance to breakage Simple installation: designed for straightforward DIY fitting without special tools Specifications Toilet seat screw diameter: about 13 mm Expansion screw diameter: about 17 mm Compatibility: suitable for most toilets How it works The expansion screw is inserted into the fixing hole and the screw is tightened As the bolt is tightened the rubber bung compresses and expands inside the hole to create a secure anchor Stainless steel and nylon parts keep the fixing rigid and long lasting Typical applications Replacing worn or corroded toilet seat fixings to restore a secure fit Installing a new toilet seat on most household toilets Repairing a loose or noisy toilet seat hinge in bathrooms, guest washrooms, or public restrooms Why choose this fitting Matches common toilet hole sizes for broad compatibility Combines corrosion resistant stainless steel with flexible nylon for both strength and proper sealing Designed for reliable DIY replacement and quick maintenance Included in the box One screw and one expansion screw (one pair) suitable for a single fixing point