This Hertel Straight Flute Tap is precision-engineered for creating M20x2.5 metric coarse threads with exceptional accuracy. Featuring a 4-flute design with a plug chamfer, this tap delivers superior cutting performance and chip evacuation when threading holes. Manufactured from high-quality high-speed steel with a bright/uncoated finish, it provides excellent durability and cutting edge retention for consistent results across multiple applications. The tap conforms to 6H class of fit standards, ensuring precise thread dimensions and compatibility. With an overall length of 4-15/32 inches, this straight flute hand tap offers good reach for various threading applications. Ideal for professional machinists and industrial settings where precision threading is required for metric fastening systems.