Achieve precise, durable threads with the OSG UNF Spiral Point Threading Tap, designed for through-hole applications and demanding machining tasks. Built for shops and professionals who value consistent fit and long tool life.

• Thread type: UNF spiral point design for efficient, accurate tapping in through-holes
• Size and pitch: 1/4" diameter, 28 threads per inch (1/4 x 28 UNF)
• Material: HSS-E (high-speed steel with cobalt) for enhanced hardness and heat resistance
• Coating: Steam Oxide coating to reduce friction and improve wear resistance
• Chip evacuation: Spiral-flute geometry facilitates continuous chip flow and minimized clogging
• Application: Specifically engineered for through-hole tapping in a range of materials
• Brand: OSG—trusted threading solutions for precision and longevity

With this tap, you can expect clean, consistent threads and reduced rework. The cobalt alloy and steam-oxide coating boost heat resistance and extend tool life even in tougher materials, while the spiral point design accelerates tapping by driving chips ahead of the thread. The through-hole compatibility ensures smooth entry and exit, helping you complete projects faster and maintain tight tolerances. Ideal for manufacturing, repair, and prototype work where dependable performance matters.