Check the listing for details. Spiral Flute Thread Taps 5/16-18 UNC 2B Titanium Coated Screw Threading Tapping. Condition: New. Listed at 16.12 USD. Thread Size: 5/16-18 UNC (Right Hand)Accuracy: 2BThread Length: 22mm / 0.87"Total Length: 70mm / 2.76"Square Shank Width: 4.9mm / 0.19" (Round Shank Dia.: 6.23mm / 0.25")Material: 6542/M2 High Speed Steel (HSS)Finish: Titanium CoatedPackage Content: 1pcs x Spiral Flute Thread TapDescriptions:Thread tap features spiral flutes, clear threads without burrs, and right hand thread cutting. Spiral flutes are fully ground to provide upward chip removal. Flutes on the screw tap help to remove chips and debris from the hole.6542 (M2) high speed steel screw taps run at high speeds and generate threads quickly and efficiently, offering high hardness, wear resistance, and good toughness. Titanium coating provides excellent corrosion resistance, and reduces the coefficient of friction for smoother tapping.