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 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