The OSG Threading Tap UNF A-Spiral Flute is a precision tapping tool built for blind-hole applications, delivering reliable UNF threads with long tool life. Designed for machinists who demand consistent performance, it combines advanced coating and a robust substrate for demanding machining environments.

• UNF A-Spiral Flute Design: Efficient chip evacuation in blind holes, reducing the chance of clogging and improving thread quality.
• Powder Metal Body: Boosts durability and wear resistance, sustaining performance in high-temperature tapping.
• TiCN Coating: Increases hardness, lowers friction, and extends tool life for high-speed machining.
• Right-Hand Thread: Standard orientation for most UNF tapping operations with straightforward setup.
• Blind-Hole Compatibility: Specifically engineered to produce clean, accurate threads in cavities with limited access.
• DIN2184-1 Compliant: Designed to meet the DIN 2184-1 specification for reliable UNF tapping.
• Size: 5/16 in diameter with 18 threads per inch (UNF) for precise, fine-pitch threads.

When you need dependable UNF threading in tight or enclosed spaces, this tap delivers consistent, repeatable results. The TiCN coating reduces wear on high-speed cycles, while the powder-metal substrate supports long-lasting performance across multiple jobs. Its spiral flute design helps keep chips moving away from the cutting edge, minimizing dwell time and improving surface finish in blind-hole assemblies. This makes it an excellent choice for precision manufacturing, aerospace or automotive components, and any project where tight tolerances and durable tooling matter.