Page 338 - Carmex - Inch Catalog 2022

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Mill-Thread Solid Carbide

NPT

Same Tool for Internal and External Thread

Grade P M K N S H
MT7     

Pitch No. of
TPI Standard Ordering Code d D Flutes I L
27 1/16 MT 0250 C03 27 NPT 1/4 .230 3 .39 2.5
27 1/8 MT 0250 C04 27 NPT 1/4 .250 3 .39 2.5
18 1/4-3/8 MT 0312 C06 18 NPT 5/16 .312 3 .58 2.5
14 1/2-3/4 MT 0500 D08 14 NPT 1/2 .500 4 .82 3.5
11.5 1-2 MT 0625 D11 11.5 NPT 5/8 .625 4 1.09 4.0
8 2 1/2 MT 0750 D16 8 NPT 3/4 .750 4 1.56 4.0
Order example: MT 0808 C14 18 NPT MT7

NPT With internal coolant bore

Same Tool for Internal and External Thread

Grade P M K N S H
MT7      ≤ 47 HRc

Pitch No. of
TPI Standard Ordering Code d D Flutes I L

27 1/8 MTB 0312 C04 27 NPT 5/16 .299 3 .43 2.5
18 1/4-3/8 MTB 0375 D06 18 NPT 3/8 .375 4 .64 3.0
14 1/2-3/4 MTB 0625 D08 14 NPT 5/8 .610 4 .89 4.0
11.5 1-2 MTB 0750 D11 11.5 NPT 3/4 .750 4 1.17 4.0
8 ≥ 2 1/2 MTB 0750 D15 8 NPT 3/4 .750 4 1.56 4.0
Order example: MTB 1010 D16 18 NPT MT7

For thread mills with coolant through the flutes see next page
For conical preparation end mills see page B08-23 First choice Alternative
B08-20