Tapping Tapping Introduction............................................................................................................................................X2–X9 Spiral-Point/Left-Hand Spiral-Flute Taps.........................................................................................................Y2–Y17 Spiral-Flute Taps ..............................................................................................................................................Y18–Y42 Straight-Flute Taps...........................................................................................................................................Y44–Y56 Forming Taps....................................................................................................................................................Y58–Y63 Thread Mills.......................................................................................................................................................Y64–Y83 High-Performance Taps Application Data .....................................................................................................Y84–Y86 Technical Information ....................................................................................................................................Y88–Y115 widia.com X1