The OSG UNC Spiral Point Threading Tap in 7/8-9 UNC is engineered for precise through-hole threading, delivering fast, clean threads and extended tool life for demanding metalworking tasks.

• Size & Thread Type: 7/8-9 UNC, designed for through-hole tapping where full-depth threads are required
• Material: HSS-E (high-speed steel with cobalt) for superior hardness and heat resistance
• Coating: Steam Oxide coating to enhance wear resistance and reduce friction during cutting
• Geometry: Spiral Point design to efficiently evacuate chips and promote straight, accurate thread formation
• Application: Ideal for through-hole work on steel and other metals, delivering reliable, consistent thread quality

This tap is built to withstand the heat and wear of frequent tapping, helping minimize tool changes and maximize productivity. The combination of HSS-E cobalt and a durable Steam Oxide finish provides dependable performance across challenging materials, while the spiral point geometry ensures smooth chip removal for cleaner threads and fewer defects.