The OSG UNC Spiral Point Threading Tap is a high-performance tool designed for through-hole threading tasks. Built for machining professionals who demand precision, durability, and efficient chip evacuation, it delivers reliable UNC threads with every cut.

• Material: HSS-E (high-speed steel with cobalt) for superior hardness and heat resistance.
• Coating: Steam oxide coating to reduce wear and extend tool life in demanding cutting conditions.
• Threading design: UNC spiral point geometry that facilitates fast, clean thread formation and easy chip evacuation.
• Size and pitch: 1-1/8" diameter with 7 TPI UNC thread, optimized for through-hole applications.
• Through-hole readiness: Specifically engineered for through-hole tapping to maximize material removal and thread accuracy.
• Brand precision: OSG engineering delivers consistent performance and reliable results across critical machining tasks.

Using this tap translates into quicker cycle times, robust thread integrity, and extended tool life in production or repair environments. The cobalt-infused HSS with steam oxide coating stabilizes performance under heat and wear, helping you achieve precise, durable threads in steel, aluminum, and other common workpiece materials. Ideal for automotive, machinery, and general fabrication projects where through-hole UNC threads are required.