This Hertel Straight Flute Tap is precision-engineered for creating M20x2.5 metric coarse threads with exceptional accuracy. Featuring 4 straight flutes and a bottoming chamfer design, this tap efficiently removes chips while creating complete threads to the bottom of blind holes. Manufactured from high-quality high-speed steel with a bright/uncoated finish, it delivers reliable performance and durability for industrial threading 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 hand tap is perfectly sized for both manual and machine operations. Ideal for professionals working with metric fastening systems who demand consistent, high-quality thread formation in various materials.