Dormer E651 UNC Spiral Flute Tap & Drill Set 1/2 UNC Sprial Flute E6511/2

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 chucks, whilst the two-flute spiral design evacuates swarf efficiently during operation. Whether you're working in a professional workshop or tackling home engineering projects, this combination tool eliminates the traditional two-step process of drilling followed by tapping. Features and Benefits: • Single-pass operation significantly reduces threading time on site • Steam-tempered surface retains cutting lubricant for improved finish • Spiral flute design ensures effective chip removal • Cylindrical shank with square drive fits standard power tools • Right-hand cutting direction for conventional threading • Suitable for through-hole applications in steel and cast steel Specifications: Diameter: 1/2 UNC Type: Sprial Flute Shank: Cylindrical shank with Square Connection diameter - millimeter (DCON MS): 9mm Threading length - millimeter (THL): 29mm Thread diameter - millimeter (TD): 10.8mm Basic standard group (BSG): DORMER DIN Material code (BMC): High Speed Steel Thread diameter size (TDZ): 1/2 Thread form (THFT): UNC - Unified Coarse Flute count (NOF): 2 Hand (Cutting direction): Right Hole Type: Through Hole Coating: Steam Tempered Material Application Priority Usage: P - Steel and cast steel Package Quantity: 1 Country of origin: Brazil Sellable Unit Weight: 58g Alt Part Number (Material ID): 5978350 Brand: Dormer Package Dimensions: 16 x 122 x 10mm