Hertel High Speed Steel Spiral Flute STI Tap, #4-40 UNC, 2 Flute, 52° Helix, Bottoming Chamfer, Bright Finish, 2" OAL

The Hertel #4-40 UNC Spiral Flute STI Tap is a precision threading tool designed for creating accurate internal threads. Featuring 2 flutes with a 52° helix angle, this high-speed steel tap delivers smooth cutting action and excellent chip evacuation. The bottoming chamfer design allows for threading closer to the bottom of blind holes, while the bright finish provides good visibility during operation. With a 2" overall length, this tap offers excellent control and accessibility in tight spaces. Manufactured by MSC Industrial under the trusted Hertel brand, this Screw Thread Insert (STI) tap (Part #007302AS) is built for durability and consistent performance across multiple threading applications. Ideal for professional machinists and fabricators who demand precision and reliability in their threading tools.

• PRECISION ENGINEERED: Hertel #4-40 UNC tap features a 52° helix angle and 2 flute design for optimal chip evacuation and threading performance in STI applications.
• HIGH SPEED STEEL: Constructed from durable HSS material with a bright finish for excellent cutting performance and extended tool life.
• BOTTOMING CHAMFER: Specially designed chamfer allows for threading to the bottom of blind holes, ensuring complete thread formation.
• SPIRAL FLUTE DESIGN: The spiral flute configuration provides superior chip removal when tapping difficult materials or deep holes.
• SPECIFICATIONS: 2" overall length tap with #4-40 UNC thread size, perfect for precision threading applications in manufacturing and repair work.