The Hertel Straight Flute Tap is a precision threading tool engineered for creating M3x0.5 metric coarse threads with exceptional accuracy. Featuring three straight flutes with a bottoming chamfer design, this tap allows you to create threads all the way to the bottom of blind holes. Constructed from high-quality high-speed steel with a titanium nitride finish, this tool offers superior hardness, wear resistance, and extended tool life. The 6H class of fit ensures standard tolerance threads perfect for general-purpose applications. With an overall length of 1-15/16" and a thread length of 5/8", this tap is ideally proportioned for manual threading operations. The straight flute design efficiently channels chips upward during the threading process, making it particularly effective for through-hole applications in various metal workpieces. This professional-grade tap delivers consistent performance and clean, accurate internal threads for your precision machining projects.