5 8" BSPF HSS Taper Hand Tap Sutton Set M16x60 ZP Features & Benefits: Engineered Flute Text:Wet Floor Features & Benefits: Engineered Flute Design • Effective chip removal at high feed rates • Lower cutting forces than comparable products Unique Symmetrical End Gashing • Improved balance at high spindle speeds • Improved workpiece finish through better balance • More effective plunging vs conventional designs Cutter diameter 3mm Shank diameter 3mm Flute length 8mm Overall length 38mm 5 x 35 Metric Coarse Hex Set Screws 50 Pieces Zinc Plated Class 8 for starting threads either second or bottoming taps should used after to achieve desire thread depth For producing precision threads by hand tapping