Page 310 - Carmex - Metric Catalog 2021

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Mill-Thread Solid Carbide

UN With relieved neck and internal coolant bore

Tools for Internal Thread

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

Pitch Thread No. of
TPI size Ordering Code d D Flutes I1 I L

20 ø ≥ 12 MTQ 1010 D30 20 UN 10 10.0 4 17.8 30.5 73
20 ø ≥ 14 MTQ 1212 E35 20 UN 12 12.0 5 20.3 35.6 84
20 ø ≥ 18 MTQ 1616 F43 20 UN 16 16.0 6 25.4 43.2 105
18 ø ≥ 15 MTQ 1212 D35 18 UN 12 12.0 4 19.7 35.3 84
16 ø ≥ 15 MTQ 1212 D35 16 UN 12 12.0 4 20.7 35.0 84
16 ø ≥ 19 MTQ 1616 E42 16 UN 16 16.0 5 25.4 42.9 105
16 ø ≥ 23 MTQ 2020 F58 16 UN 20 20.0 6 36.5 58.8 105
14 ø ≥ 20 MTQ 1616 E45 14 UN 16 16.0 5 25.4 45.3 105
12 ø ≥ 16 MTQ 1212 D42 12 UN 12 12.0 4 25.4 42.3 84
12 ø ≥ 24 MTQ 2020 E55 12 UN 20 20.0 5 33.9 55.1 105
Order example: MTQ 1212 D35 16 UN MT7 First choice Alternative

For small thread mills see pages B09-5, 6, 12, 15, 17 and B11-4, 6

B08-12