® Mill-Thread Solid Carbide NPTF With internal coolant bore Same Tool for Internal and External Thread Grade P M K N S H MT7      ≤ 47 HRc PitchTPI Standard Ordering Code d D No. ofFlutes I L 27 1/8 MTB 08076 C10 27 NPTF 8 7.6 3 10.8 64 18 1/4-3/8 MTB 1010 D16 18 NPTF 10 10.0 4 16.2 73 14 1/2-3/4 MTB 16155 D22 14 NPTF 16 15.5 4 22.7 105 11.5 1-2 MTB 2020 D29 11.5 NPTF 20 20.0 4 29.8 105 8 2 1/2 MTB 2020 D39 8 NPTF 20 20.0 4 39.7 105 Order example: MTB 16155 D22 14 NPTF MT7 NPTF With internal coolant through the flutes Same Tool for Internal and External Thread Grade P M K N S H MT7      ≤ 47 HRc PitchTPI Standard Ordering Code d D No. ofFlutes I L 27 1/8 MTZ 08076 C10 27 NPTF 8 7.6 3 10.8 64 18 1/4-3/8 MTZ 1010 D16 18 NPTF 10 10.0 4 16.2 73 14 1/2-3/4 MTZ 16155 D22 14 NPTF 16 15.5 4 22.7 101 Order example: MTZ 1010 D16 18 NPTF MT7 For conical preparation end mills see page B08-23 First choice Alternative B08-22