The Hobsons X9 Class 3 Countersunk Phillips Screw (#10-24 x 25mm) is a premium self-drilling fastener designed for secure metal-to-metal fixing where a flush, professional finish is required. Featuring a countersunk Phillips head and Class 3 corrosion-resistant coating, it delivers reliable performance for sheet metal fabrication, electrical work and general construction in indoor and protected outdoor environments. The #10-24 fine thread and self-drilling point provide strong holding power and fast installation into light gauge steel without the need for pre-drilling in most applications. Supplied in a convenient 1000-piece box, it is ideal for trade professionals seeking a clean finish and dependable performance.