Dormer E651 UNC Spiral Flute Tap & Drill Set

The 1/2 UNC spiral flute tap and drill set delivers robust threading capability for medium to large-diameter applications. This substantial combination tool produces 10.8mm thread diameter with a generous 29mm threading length, making it well-suited for structural metalwork, machinery assembly and heavy-duty fabrication projects where reliable half-inch UNC threads are required. The high-speed steel construction with steam-tempered coating ensures consistent performance throughout the tool's service life. The 9mm connection diameter provides solid engagement with power tool