Hertel Extension Tap, 1/4-20 UNC, 4 Flutes, H3, High Speed Steel, Bright Finish, Plug Chamfer, 6" OAL, 3B Class of Fit

The Hertel Extension Tap is a precision threading tool designed for creating internal threads in deep holes or recessed areas. This 1/4-20 UNC tap features 4 flutes for efficient chip evacuation and a bright/uncoated finish for excellent visibility during operation. Crafted from high-quality High Speed Steel (HSS), it offers superior durability and cutting performance even in challenging materials. The H3 spiral point design helps push chips forward, making it ideal for through holes. With a generous 6" overall length, this extension tap reaches areas standard taps cannot access. The plug chamfer provides a standard thread entry, while the 3B class of fit ensures precise threading to specification. This professional-grade tap is manufactured by MSC Industrial under the trusted Hertel brand (Part #G837581), making it a reliable choice for machinists, maintenance professionals, and manufacturing operations requiring consistent threading results.

• PRECISION THREADING: Hertel Extension Tap features 1/4-20 UNC thread size with 4 flutes for accurate and efficient threading in extended applications.
• HIGH-QUALITY CONSTRUCTION: Made from High Speed Steel (HSS) with bright/uncoated finish for durability and optimal cutting performance.
• DESIGN SPECIFICATIONS: H3 spiral point design with plug chamfer style provides excellent chip evacuation and thread formation.
• EXTENDED REACH: 6" Overall Length (OAL) allows for threading in deep holes and hard-to-reach areas.
• PROFESSIONAL GRADE: Standard hand tap with 3B Class of Fit ensures precise threading for industrial and mechanical applications.