Dormer E651 UNC Spiral Flute Tap & Drill Set

The 1/4 UNC spiral flute tap and drill set is perfect for smaller-diameter threading applications commonly encountered in light fabrication, instrumentation work and general engineering. Producing a 5.1mm thread diameter with 17mm threading length, this compact combination tool handles quarter-inch UNC threads efficiently in a single operation, making it an essential addition to any toolkit for both trade professionals and home workshop enthusiasts.

The steam-tempered high-speed steel construction provides excellent wear resistance whilst maintaining sharp cutting edges. The 6.3mm connection diameter suits standard power drill chucks, and the two-flute spiral configuration ensures reliable chip evacuation even in deeper holes. This tool eliminates the traditional workflow of switching between drill bits and taps, saving valuable time on repetitive threading tasks.

Features and Benefits:
• Combined drilling and tapping reduces operation time significantly
• Steam-tempered coating retains lubricant for smoother cutting
• Compact size ideal for smaller-diameter threading work
• Two-flute design provides efficient swarf removal
• Direct power tool compatibility eliminates need for tap wrenches
• Right-hand thread cutting for standard applications

Specifications:
Diameter: 1/4 UNC
Type: Sprial Flute
Shank: Cylindrical shank with Square
Connection diameter - millimeter (DCON MS): 6.3mm
Threading length - millimeter (THL): 17mm
Thread diameter - millimeter (TD): 5.1mm
Basic standard group (BSG): DORMER DIN
Material code (BMC): High Speed Steel
Thread diameter size (TDZ): 1/4
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: 20g
Alt Part Number (Material ID): 5978353
Brand: Dormer
Package Dimensions: 17 x 89 x 14mm