General description Pack of 100 self-drilling sheet metal screws with a large domed head, designed for rapid penetration into metal without the need for pre-drilling. These screws are fully threaded and made from zinc-plated steel, ensuring rust resistance and durability. The screws feature a Phillips/Crosshead drive system and are ideal for various applications in metal construction and renovation projects. Technical specifications Material: Zinc-plated steel Drive System: Phillips/Crosshead Head Style: Round, Domed Size: Ø4.2x19mm Head Diameter: 11mm Height (with head): 21mm Unit Weight: 1.71g Usage For metal-to-metal fixings, including metal frames and aluminum profiles Applications include steel construction, carpentry work, interior design, sheet metal fastening, metal cladding, tightening gutters, and mounting grilles Suitable for sheet metal roofing and other renovation tasks