The OSG UNC Spiral Flute Threading Tap is a precision tool designed for blind-hole threading in steel and other hard metals. Built with HSS-E cobalt and a durable steam oxide finish, it delivers consistent, high-quality threads with extended tool life.

• Size and thread: 7/16" x 14 UNC threading tap for standard UNC blind-hole applications
• Material: HSS-E (high-speed steel with cobalt) for improved wear resistance and heat tolerance
• Coating: Steam oxide coating enhances durability and reduces friction during cutting
• Flute design: Spiral flutes promote efficient chip evacuation in confined blind-hole work
• Application: Specifically optimized for reliable threading in blind holes, delivering clean, accurate threads
• Technology: Powered by OSG’s advanced threading technology to ensure consistent results and long tool life

This tap helps you produce precise 7/16-14 threads with reduced risk of galling or thread inconsistencies in challenging materials. The spiral flute geometry improves chip flow, minimizing tapping stalls, while the cobalt-infused HSS keeps cutting edges sharper longer under heat. The steam oxide coating adds protection against corrosion and wear, making it a dependable choice for demanding machining tasks, maintenance work, and production runs where consistent thread quality matters.