OSG Threading Tap - UNF Spiral Point HSS-E - Steam Oxide Coated - Through Hole - No. 6 x 40

The OSG UNF Spiral Point Threading Tap is engineered for precise through-hole threading in demanding metals, delivering consistent, high-quality threads with extended tool life.

• Threading format: UNF Spiral Point designed for efficient chip evacuation and fast, clean thread formation.
• No. 6 x 40 size: 6-40 UNF specification ideal for through-hole applications in common machining materials.
• Material: HSS-E (high-speed steel with cobalt) for superior wear resistance and heat tolerance in tough threading tasks.
• Coating: Steam Oxide coating reduces friction and enhances corrosion resistance under demanding cutting conditions.
• Through-hole design: Optimized geometry for reliable tapping through material thickness with smooth plug/exit.
• Cutting geometry: Spiral point provides positive cutting action and efficient chip evacuation to minimize re-cutting.
• Durability & accuracy: Built to maintain precise thread forms and withstand extended use in critical machining tasks.

This tap helps you achieve accurate, repeatable threads with less tool wear and fewer reworks. The combination of HSS-E alloy and steam oxide coating supports long life even in tougher metals, while the spiral point geometry accelerates throughput by pushing chips ahead of the flute. Ideal for professionals demanding reliable performance in through-hole tapping—from automotive components to precision fixtures—without compromising on thread quality or tool longevity.