Check the listing for details. 1/2-13 UNC HSS Threading Tap H2 Tolerance 3 Flutes Thread Screw Tap. Condition: New. Listed at 17.10 USD. HSS Threading TapProduct Details1.Applications: Suitable for processing blind holes and sticky materials. Great for drilling and tapping aluminum, die steel, stainless steel, bronze, hard plastics, etc.2.Material and Finish: High speed steel tool is with high hardness and toughness, heat resistance and wear resistance. Features the base substrate without any coatings. Suitable for general purpose thread tapping.3.Tap Size: 1/2-13 UNC thread, H2 thread tolerance grade. Spiral flute design, upward chip removal. Right hand thread cutting, clear threads, fast tapping with accuracy.4.Easy to Use: Used on drilling machines, tapping machines, CNC and milling machines. Use with tapping oil to get higher quality threads and more durable taps.5.Tips: Machine taps are suggested to be used with tap collets with overload protection.