• Thread Size (Inch): 1/2"-20
• Finish/Coating: Black Oxide
• Material: HSSE-V3
• Thread Direction: Right Hand
• Flute Direction: Right
• Through Coolant: No
• Chamfer: 2.5P
• Number of Flutes: 3
• Thread Limit: H3
HSSE-V3% Vanadium • Superior performance in hardened tool steels such as 4140, 4340, H13, D2. • Up to 35 HHRC Designed for high-speed tapping applications. Developed to withstand the high stress and high heat associated with high-speed CNC production tapping. Features a unique free-cutting design with a special tempering and geometry which contributes to extra tool life.