Dormer E651 UNC Spiral Flute Tap & Drill Set – E651716

The 7/16 UNC spiral flute tap and drill set delivers reliable threading for applications requiring this intermediate-to-large diameter. Producing a 9.4mm thread diameter with 25mm threading length, this combination tool is well-suited for automotive components, machinery fabrication and structural metalwork where seven-sixteenth inch UNC threads are needed. The integrated design eliminates the traditional workflow of drilling, tool changing, and then tapping separately. Crafted from high-speed steel with a steam-tempered coating, this tool provides dependable cutting performance across its service life. The 8mm connection diameter fits standard power drill chucks securely, whilst the two-flute spiral configuration ensures efficient swarf removal during operation. Both professional engineers and home workshop enthusiasts will appreciate the time savings and convenience of creating accurate threads without switching equipment. Features and Benefits: • Single-pass operation significantly reduces threading time • Steam-tempered finish retains cutting lubricant effectively • Two-flute spiral pattern provides reliable chip evacuation • Cylindrical shank with square drive for power tool use • Right-hand cutting direction for standard applications • Suitable for through-hole threading in steel and cast steel Specifications: Diameter: 7/16 UNC Type: Sprial Flute Shank: Cylindrical shank with Square Connection diameter - millimeter (DCON MS): 8mm Threading length - millimeter (THL): 25mm Thread diameter - millimeter (TD): 9.4mm Basic standard group (BSG): DORMER DIN Material code (BMC): High Speed Steel Thread diameter size (TDZ): 7/16 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: 46g Alt Part Number (Material ID): 5978377 B