Pan head with washer self-tapping screws are fasteners featuring a rounded head combined with an integrated or free-spinning washer, designed to cut threads directly into materials like metal, plastic, or wood. The washer increases the bearing surface, distributing load evenly and reducing the risk of material damage. Commonly used in electrical fittings, enclosures, and light metal assemblies, they offer secure, vibration-resistant fastening with added surface protection.