Page 330 - Carmex - Inch Catalog 2022

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

20 ø ≥ .47 MTQ 1010 D30 20 UN 10 .394 4 .70 1.20 2.9
20 ø ≥ .55 MTQ 1212 E35 20 UN 12 .472 5 .80 1.40 3.3
20 ø ≥ .71 MTQ 1616 F43 20 UN 16 .630 6 1.00 1.70 4.1
18 ø ≥ .59 MTQ 1212 D35 18 UN 12 .472 4 .78 1.39 3.3
16 ø ≥ .59 MTQ 1212 D35 16 UN 12 .472 4 .81 1.38 3.3
16 ø ≥ .75 MTQ 1616 E42 16 UN 16 .630 5 1.00 1.69 4.1
16 ø ≥ .91 MTQ 2020 F58 16 UN 20 .787 6 1.44 2.31 4.1
14 ø ≥ .79 MTQ 1616 E45 14 UN 16 .630 5 1.00 1.78 4.1
12 ø ≥ .63 MTQ 1212 D42 12 UN 12 .472 4 1.00 1.67 3.3
12 ø ≥ .95 MTQ 2020 E55 12 UN 20 .787 5 1.33 2.17 4.1
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