The Hertel Straight Flute Tap is a precision threading tool designed for creating 1-1/2-6 UNC threads with professional results. Featuring 4 flutes with a plug chamfer design, this tap delivers efficient chip evacuation and smooth cutting action. Crafted from high-quality high-speed steel with a bright/uncoated finish, it offers excellent durability and performance across various materials. The 3B class of fit ensures threads with optimal engagement and strength, while the 6-3/8" overall length provides ample reach for deeper applications. This right-hand tap is manufactured by MSC Industrial under the trusted Hertel brand, making it suitable for industrial applications, maintenance shops, and professional machinists who demand reliable threading tools. The H4 designation indicates its specific cutting characteristics for consistent thread formation.