
Symbol of flute design Spiral Straight Spiral point Left hand spiral Roll Symbol of size Symbol of flute design SP HT PO SL RO Overall length Shank dia. Chamfer length Note 1: Product symbols shown in red mean the Drill hole shape tap suitable for synchronized feed tapping. L Ds ℓc P: B: Outside diameter material Front face Thickness Material M2 Main Main Product Product L Ds ℓc Class Class Flute Tap selection Symbol Code Dies selection Symbol Code Di es material page page Note 1 Note 1 Taps / Tr 14 × 3 Dies / S0.5 × 0.125 M3 Di es For Miniature HSS For trapezoidal threads 12 SL Tr LYT14S0HEB SL - 190 11 23P ⑦-42 Rolling dies threads 129⑮ MS-RS-D R2 6 2 - RA20.5- ⑩-47 For left hand 12 23P ⑦-43 Dies / S0.6 × 0.15 SL LH Tr ZYT14S0HEB SL - 190 11 threads M4 Di es Taps / Tr 16 × 4 Rolling dies For Miniature HSS 129⑮ MS-RS-D R2 6 2 - RA20.6- ⑩-47 threads For trapezoidal threads 12 220 12 22.5P ⑦-42 Dies / S0.7 × 0.175 SL Tr LYT16U0HEB SL - M5 For left hand Di threads 12 SL LH Tr ZYT16U0HEB SL - 220 12 22.5P ⑦-43 es For Miniature HSS 129⑮ MS-RS-D Rolling dies ⑩-47 Taps / Tr 16 × 3 R3 6 2 - RA20.7- threads Dies / S0.8 × 0.2 M6 Di es For trapezoidal threads 12 SL Tr LYT16S0HEB SL - 200 13 25P ⑦-42 For left hand For Miniature HSS threads 12 SL LH Tr ZYT16S0HEB SL - 200 13 25P ⑦-43 Rolling dies threads 129⑮ MS-RS-D R3 8 3 - RO20.8- ⑩-47 M8 Taps / Tr 18 × 4 Dies / S0.9 × 0.225 Di es For Miniature HSS For trapezoidal threads 12 SL Tr LYT18U0HEB SL - 220 14 22.5P ⑦-42 Rolling dies threads 129⑮ MS-RS-D R3 8 3 - RO20.9- ⑩-47 For left hand threads 12 SL LH Tr ZYT18U0HEB SL - 220 14 22.5P ⑦-43 M1 0 Di es Taps / Tr 20 × 4 For trapezoidal threads 12 SL Tr LYT20U0HEB SL - 230 16 24.5P ⑦-42 M1 Di 2 es For left hand threads 12 SL LH Tr ZYT20U0HEB SL - 230 16 24.5P ⑦-43 Taps / Tr 22 × 5 M1 Di -M es 8.5 For trapezoidal threads 12 SL Tr LYT22W0HEB SL - 250 18 22P ⑦-42 For left hand threads 12 SL LH Tr ZYT22W0HEB SL - 250 18 22P ⑦-43 M9 -M Taps / Tr 24 × 5 Di es 24 For trapezoidal threads 12 SL Tr LYT24W0HEB SL - 260 19 24P ⑦-42 M2 For left hand 5- threads 12 SL LH Tr ZYT24W0HEB SL - 260 19 24P ⑦-43 Di es M48 Taps / Tr 25 × 5 M5 Di 0-M For trapezoidal threads 12 SL Tr LYT25W0HEB SL - 270 20 25P ⑦-42 es 100 For left hand threads 12 SL LH Tr ZYT25W0HEB SL - 270 20 25P ⑦-43 Fo rU Taps / Tr 26 × 5 thr nifie e Di ads d es For trapezoidal threads 12 SL Tr LYT26W0HEB SL - 280 21 27P ⑦-42 For For left hand W threads 12 SL LH Tr ZYT26W0HEB SL - 280 21 27P ⑦-43 thr hitwo e r Di ads th es Taps / Tr 28 × 5 For S crew For trapezoidal threads 12 SL Tr LYT28W0HEB SL - 290 22 28P ⑦-42 on se threads w us Di ing machi ed For left hand es( nes threads 12 SL LH Tr ZYT28W0HEB SL - 290 22 28P ⑦-43 M)S Taps / Tr 30 × 6 For P Di ipe th es re ads For trapezoidal threads 12 SL Tr LYT30Y0HEB SL - 300 24 25P ⑦-42 For left hand threads 12 SL LH Tr ZYT30Y0HEB SL - 300 24 25P ⑦-43 For A pip meric e a Di thre n es ads For M thr iniatu e Di ads re es For improvement, spec may change without advance notice. Sizes-135