Material Alloy Steel Drive System Cross Head, Phillips Head Style Round Weight 1.35 Grams Thread Coverage Fully Threaded Size Ø4.2x13mm About this item Pack of 200 self-drilling sheet metal screws with large head in steel - Head imprint: PH/Crosshead Dimensions: Head diameter: 11 mm. Height of the screw /with head/: 15 mm Self-drilling screw with domed head: Ø4.2x13 mm. For fast penetration of metal without pre-drilling Fully threaded screw - self-drilling for very quick and easy assembly Use: For metal-to-metal fixings - metal frames, aluminium profiles. Self-drilling screws are designed for cases where it is important to distribute pressure over larger/oversized holes Application: Steel construction, carpentry work, interior design, sheet metal fixing, metal cladding, for tightening gutters, for mounting grilles, sheet metal roofing, etc. Round head self-drilling screw - rust resistant Unit weight: 1.35 g. Finishing material: Steel-Zinc plated. Colour: Silver