Check the listing for details. Straight Flute Thread Tap 3/16-24 UNC Nitride Coated Screw Tapping Tool. Condition: New. Listed at 11.28 USD. Specifications:Thread Size: 3/16-24 UNCTotal Length: 61mm / 2.40"Thread Length: 20mm / 0.79"Square End Size: 4mm / 0.16"Accuracy Class: 2BCutting Direction: Right HandMaterial: High Speed Steel 6542 (HSS6542)Finish: Black Nitride CoatedNumbers of Flutes: 3 FlutesPackage Content: 1pcs x Straight Flute Thread TapsDescriptions:High-speed steel 6542 has high hardness, good wear resistance, is not easy to deform, and long service life. It has good heat resistance and can still maintain stability in high-temperature environments. The surface is nitrided and blackened, which is corrosion-resistant and not easy to rust even in a humid environment.Suitable for processing through holes or shallow holes. Used for drilling and tapping aluminum, stainless steel, copper, hard plastics, etc.