The Sealey 600 Piece Countersunk Self Tapping Screw Assortment is a comprehensive fastener kit designed for professional tradespeople and contractors requiring a reliable selection of self-tapping screws for workshop or site use. This assortment contains 600 countersunk Pozi head screws manufactured to DIN 7982 standards, covering 11 different size combinations ranging from 3.5mm to 4.8mm diameter and 16mm to 38mm in length. The self-tapping design eliminates the need for pre-drilling pilot holes in many materials, saving time on installation tasks across metal fabrication, electrical enclosures, HVAC systems, and general construction applications. All screws are supplied in a sturdy partitioned storage box that keeps each size organised and readily accessible, making it ideal for mobile tradespeople and service engineers. The countersunk profile ensures a flush finish on sheet metal, plastic, and composite materials, whilst the Pozidrive head provides reliable torque transfer and reduces cam-out during installation. The assortment is weighted towards the most commonly used smaller sizes, with 120 pieces each of the 3.5 x 16mm and 3.5 x 19mm screws, ensuring you have sufficient quantities of everyday fasteners whilst maintaining a practical range of larger sizes for occasional requirements. Features and Benefits: • DIN 7982 standard construction ensures consistent quality and performance • Countersunk Pozi head design for flush finishing and reliable driving • Self-tapping threads eliminate pre-drilling in suitable materials • Partitioned storage box keeps sizes organised and protected • 11 size variations covering common trade applications Specifications: Brand: Sealey Contents: (Approximate Quantity) Diameter x Length; 3.5 x 16 (x120), 3.5 x 19 (x120), 3.5 x 25 (x60), 3.5 x 38 (x50), 4.2 x 16 (x60), 4.2 x 19 (x50), 4.2 x 25 (x50), 4.2 x 38 (x30), 4.8 x 19 (x30), 4.8 x 25 (x20), 4.8 x 38mm (x10) Nett Weight: 1.12kg