The OSG UNF Spiral Flute Threading Tap in 9/16 x 18 is a precision threading tool designed for blind-hole work. Built for professionals who demand reliable, accurate UNF threads and extended tool life, it delivers dependable performance in challenging materials.

• Size and thread: 9/16-18 UNF threading tap, optimized for precise internal threads in blind holes.
• Material: HSS-E (high-speed steel with cobalt) for enhanced wear resistance and elevated heat tolerance during heavy cuts.
• Coating: Steam oxide coating reduces friction, provides corrosion resistance, and helps extend tool life in demanding environments.
• Flute design: Spiral flute geometry improves chip evacuation in blind holes, minimizing chip packing and improving finish quality.
• Application: Specifically suited for internal threads in hard-to-reach blind-hole applications across steel and alloy workpieces, compatible with standard tapping setups.
• Durability: Designed to maintain stability at higher cutting speeds and through repeated use, delivering consistently clean threads over time.

This threading tap delivers precise, clean UNF threads in blind holes with reduced risk of chip buildup thanks to its spiral flute design. The cobalt-infused HSS-E core handles heat and wear effectively, while the steam oxide coating enhances lubricity and longevity in real-world machining. Ideal for automotive components, aerospace hardware, and general metalworking tasks where reliable internal threading is essential, this tap helps you minimize rework and downtime. For best results, use proper cutting fluid and steady feeds in compatible tapping equipment.