The OSG UNC Spiral Flute Threading Tap is a precision tool tailored for professionals who do blind-hole threading in demanding metals. Built with cobalt-enhanced HSS (HSS-E) and finished with a Steam Oxide coating, it delivers reliable performance and extended life in tough machining environments.

• Thread Size: 3/4-10 UNC (coarse) for standard Unified National Coarse threads in metalworking applications
• Material: HSS-E (high-speed steel with cobalt) for superior wear resistance and heat tolerance
• Coating: Steam oxide coating to improve corrosion resistance and reduce friction during cutting
• Flute Design: Spiral flute geometry optimizes chip evacuation, helping prevent clogging in blind-hole tapping
• Application Focus: Specifically optimized for blind-hole threading to deliver clean, accurate threads
• Technology & Life: OSG’s advanced threading geometry supports consistent thread form and extended tool life

This tap enables precise, dependable thread creation with minimal rework. The spiral flute design reduces chip buildup in blind holes, while the HSS-E cobalt composition and durable steam-oxide coating provide longevity and stable performance across materials that demand heat resistance. Ideal for maintenance, fabrication, and production tasks where accurate UNC threads and reusable tooling matter.