The OSG Threading Tap UNC A-Spiral Flute is a high-performance tapping tool designed for precision UNC threads in blind holes. Built from powder metal and TiCN-coated, it delivers lasting durability and consistent results in demanding applications.

• Thread type: UNC (Unified National Coarse) threads for standard, widely compatible coarse threading in blind holes.
• Flute design: A‑spiral flute enhances chip evacuation, reducing binding and ensuring smoother entry and exit in blind-hole tapping.
• Material: Powder metal construction provides superior durability, wear resistance, and strength under high-speed cutting.
• Coating: TiCN coating increases surface hardness, lowers friction, and extends tool life for repeated, high‑speed use.
• Size: 5/16 x 18 UNC, a common coarse-thread size suitable for a range of standard applications.
• Standards: DIN 2184-1 compliance ensures compatibility with industry specifications for blind-hole taps.
• Direction: Right-hand tap for conventional threading operations.

Designed for high-speed, high-precision tapping, this tap delivers clean, accurate threads in blind holes while resisting wear and heat buildup. The combination of powder metal durability and TiCN hardness helps you maintain thread quality through multiple taps, minimizing downtime and material waste. Whether upgrading existing tooling or equipping a precision shop, this tap provides reliable performance for demanding manufacturing environments.