OSG Threading Tap - UNF Spiral Point HSS-E - Steam Oxide Coated - Through Hole - 3/8 x 24

The OSG UNF Spiral Point Threading Tap is a high-performance tool designed for precise through-hole threading in professional machining. Crafted from HSS-E cobalt and finished with a steam oxide coating, it delivers reliable, repeatable UNF threads with outstanding durability.

• Thread type: UNF Spiral Point threading tap optimized for through-hole applications, delivering accurate thread starts and clean profiles.
• Material: HSS-E (high-speed steel with cobalt) for enhanced hardness, wear resistance, and heat tolerance during tapping.
• Coating: Steam Oxide coating reduces friction, improves lubricity, and extends tool life in demanding cuts.
• Size and pitch: 3/8" diameter with 24 threads per inch (3/8 x 24 UNF) for standard UNF through holes.
• Chip evacuation: Spiral point geometry promotes efficient chip flow, minimizing plug formation and startup torque.
• Through-hole performance: Specifically engineered for through-hole tapping, ensuring consistent depth and clean threads in metal workpieces.
• Durability: Combined cobalt content and oxide coating deliver longer tool life under elevated temperatures and tough materials.

This tap empowers shops to achieve precise, high-quality UNF threads quickly, reducing rework and downtime. The robust HSS-E/cobalt composition and steam oxide finish help maintain sharpness across long production runs, while the spiral point design keeps chips moving away from the hole for smoother operations.