The Carmex Threading Tap – Spiral Flute – UNF Supercut Tap is a precision internal tapping tool designed for professionals who need dependable UNF threads in challenging materials. Built for machinists and fabricators, it delivers consistent starts, clean threads, and durable performance in demanding jobs.

• Thread size: 1/4-28 UNF, right-hand thread for standard unified fine-thread applications.
• Flute design: Spiral flute for efficient chip evacuation, minimizing clogging and reducing tap binding during deep or fast-threading operations.
• Material: HSS-E (high-speed steel with cobalt) to improve wear resistance and heat tolerance in high-speed tapping.
• Geometry: UNF Supercut geometry engineered for precise starts and consistent thread profiles across materials.
• Performance: Optimized for challenging materials and high-speed threading, delivering reliable results with longer tool life.

Whether tapping alloy steel, stainless variants, or other hard-to-machine substrates, this tap helps you achieve accurate UNF threads with fewer reworks. The combination of spiral flutes and cobalt-enhanced steel supports heat resistance and sustained sharpness, making it a dependable choice for production runs, automotive work, and fabricating fixtures. Use with appropriate tapping fluids and machine settings to maximize clarity of cut and finish.