® Mill-Thread Solid Carbide NPS With internal coolant bore Same Tool for Internal and External Thread - Inch Shank Grade P M K N S H MT7 ≤ 47 HRc PitchTPI Standard Ordering Code dinch D No. ofFlutes I L 27 1/8 MTB 0312 C04 27 NPS 5/16 7.6 3 10.8 63 18 1/4-3/8 MTB 0375 D06 18 NPS 3/8 9.5 4 16.2 76 14 1/2-3/4 MTB 0625 D08 14 NPS 5/8 15.5 4 22.7 101 11.5 1-2 MTB 0750 D11 11.5 NPS 3/4 19.0 4 29.8 101 Order example: MTB 0375 D06 18 NPS MT7 NPSF With internal coolant bore Same Tool for Internal and External Thread - Inch Shank Grade P M K N S H MT7 ≤ 47 HRc PitchTPI Standard Ordering Code dinch D No. ofFlutes I L 27 1/8 MTB 0312 C04 27 NPSF 5/16 7.6 3 10.8 63 18 1/4-3/8 MTB 0375 D06 18 NPSF 3/8 9.5 4 16.2 76 14 1/2-3/4 MTB 0625 D08 14 NPSF 5/8 15.5 4 22.7 101 11.5 1-2 MTB 0750 D11 11.5 NPSF 3/4 19.0 4 29.8 101 Order example: MTB 0312 C04 27 NPSF MT7 First choice Alternative B08-24