The OSG UNF Spiral Flute Threading Tap is a high-precision tool designed for fabricators and machinists who need reliable, accurate threads in blind-hole applications. Built for demanding metalworking tasks, it delivers consistent thread form with extended tool life.

• Thread Size: 3/8-24 UNF (Unified National Fine) for tight, precise engagement in blind holes.
• Material & Coating: HSS‑E (high-speed steel with cobalt) core plated with Steam Oxide for improved wear resistance and heat tolerance.
• Flute Design: Spiral flutes enhance chip evacuation, reducing clogging and heat buildup during deep or confined-hole threading.
• Application: Optimized for blind-hole threading tasks where clean starts and accurate thread form are essential.
• Durability: Coated for longevity in repeated cuts and challenging materials, helping extend tool life in production environments.

This threading tap enables precise, repeatable UNF threads with reliable performance in metalworking applications. The combination of cobalt-enhanced HSS, steam-oxide coating, and a spiral flute design supports efficient chip removal and reduced wear, making it a dependable choice for critical machining tasks, fixtures, and assemblies that require strong, accurate fasteners.