Achieve precise, durable threads with the OSG UNF Spiral Flute Threading Tap. Designed for blind-hole work, it delivers high-accuracy threads and extended tool life in demanding metals.

• Thread Type: UNF (Unified National Fine) profile for strong, precise threads in tough materials.
• Size & Pitch: 7/8" major diameter with 14 threads per inch (7/8-14 UNF).
• Material: HSS-E (high-speed steel with cobalt) for superior hardness and heat resistance.
• Coating: Steam oxide coating enhances wear resistance and provides rust protection.
• Flute Design: Spiral flute for efficient chip evacuation, especially advantageous in blind-hole applications.
• Application: Optimized for blind-hole threading to minimize chip packing and improve thread quality.
• Brand & Technology: OSG’s advanced threading technology offers consistent performance and extended tool life.

This combination of cobalt-enhanced steel, protective steam oxide, and a spiral-flute geometry reduces cutting temperature and wear while delivering clean, accurate threads. The design helps prevent chip buildup in blind holes, reducing rework and downtime. Ideal for critical machining tasks in demanding materials, it provides reliable performance and long-lasting value in production environments.