Crafted from high-speed steel (HSS), the E545 tap boasts exceptional strength and wear resistance, ensuring longevity even under rigorous working conditions. Its spiral point configuration facilitates efficient chip evacuation, reducing the risk of chip congestion and enhancing operational efficiency. Designed for British Association (BA) threads, with a nominal diameter of 10, this tap is perfect for creating internal threads with accuracy and reliability. Whether you're machining steel, stainless steel, aluminium, or other alloys, the Dormer E545 tap delivers uniform threading results, contributing to the overall quality of your workpiece. Features & Benefits • Made from high-speed steel • Manufactured to ISO 529 • Steam tempered coating • Spiral point Specifications • Thread Size: BA4 • Thread Length: 16.5mm • Shank Diameter: 3.6mm