Specifications: Thread size: UNC 1 or 4-20 thread tolerance: H2 thread length: 23mm or 0.9" plug chamfer and right hand thread cutting. 3 straight flutes are ground to provide downward chip removal Material andamp Finish: High-speed steel tool is great for general purpose applications, offering high hardness and toughness. Titanium coating for improving wear and fusion resistance, long service life Applications: Great for through-hole threads. Can be used for drilling and tapping stainless steel (below 30HRC), aluminum, die steel, ordinary steel, non-ferrous metals, hard plastics, etc. How to Use: Suitable for drill presses, tapping machines, CNC and milling machines. Used with tapping oil to get higher quality threads and more durable taps Warm Tips: Machine taps are suggested to be used with tap chucks with overload protection. It is not recommended for hand use and electric drill tapping