OSG Threading Tap - UNC Spiral Point HSS-E - Steam Oxide Coated - Through Hole - 5/8 x 11 Centre Drill Ball-nose geometry with 2 flutes

Ball-nose geometry with 2 flutes for precise curved contours: Produces smooth surfaces and accurate radii on narrow ribs

Material and hardness: High-speed steel with cobalt (HSS-E) for enhanced wear resistance and heat tolerance during heavy-duty tapping

Primary Use: Optimized for mold and die applications requiring precise radii and tight tolerances

and fine finishing operations—especially on aluminum and other common milling materials

and improved chip flow to extend tool life and minimize heat and chip buildup

OSG Threading Tap - UNC Spiral Point HSS-E - Steam Oxide Coated - Through Hole - 5/8 x 11 Centre Drill Ball-nose geometry with 2 flutesThe OSG UNC Spiral Point Threading Tap is built for precise through hole threading with speed and reliability. Crafted from HSS E (high speed steel with cobalt) and finished with a Steam Oxide coating, its designed to deliver durable performance in demanding machining tasks. Thread size: 5 8" diameter, 11 TPI UNC, optimized for through hole tapping. Material: HSS E (high speed steel with cobalt) for enhanced hardness and heat resistance during