The OSG Threading Tap NPT A-Spiral Flute – Powder Metal, TiCN Coated, Right Hand – Blind Holes (DIN5156) is a purpose-built tool for precision National Pipe Taper threads in tight blind-hole spaces. Designed for machinists who demand consistent, leak-tight fittings, it combines advanced materials with smart geometry for reliable performance.

• Thread type: NPT (National Pipe Taper) threads for accurate, repeatable right-hand tapping in blind holes.
• A-Spiral flute: Specialized spiral flute geometry for efficient chip evacuation and reduced clogging in deep or restricted cavities.
• Material: Powder-metal body delivers enhanced toughness, wear resistance, and durability under demanding cutting conditions.
• Coating: TiCN coating lowers friction and improves heat resistance to support higher cutting speeds and longer tool life.
• Size: 1/2" nominal size with 14 threads per inch (1/2 x 14), suitable for standard NPT applications.
• Standards: DIN5156 compatibility ensures reliable hole threading performance within specified tolerances.
• Application: Optimized for blind-hole tapping across a range of materials used in piping components and fluid systems.

In practical use, this tap provides clean, accurate threads in constrained spaces, reducing rework and ensuring dependable seals for pneumatic and hydraulic assemblies. The combination of powder-metal construction and TiCN coating supports longer tool life and steadier performance, even when threading tougher materials. Ideal for maintenance, fabrication, or production environments where durable NPT taps in blind-hole applications are essential for fast, consistent results.