Page 312 - Carmex - Metric Catalog 2021

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Mill-Thread Solid Carbide

UN With internal coolant bore and cutting chamfer

Tools for Internal Thread

Thread length: 2xD

Grade P M K N S H
K20     

Pitch UNC UNF UNEF Ordering Code d D Df No. of I If L
TPI Flutes

20 1/4 AMT 08048 C14 20 UN-C 8 4.8 6.8 3 14.6 15.6 64
18 5/16 AMT 1006 C17 18 UN-C 10 6.0 8.4 3 17.6 18.8 73
16 3/8 AMT 12074 C21 16 UN-C 12 7.4 10.0 3 21.4 22.7 84
Order example: AMT 12074 C21 16 UN-C K20
For information about AMT Thread Mills and cutting data see page B12-16

G (55º) BSF, BSP
Same Tool for Internal and External Thread

Grade P M K N S H
MT7     

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

28 G1/16-G1/8 MT 0606 C9 28 W 6 6.0 3 9.5 58
19 G1/4-3/8 MT 0808 C14 19 W 8 8.0 3 14.0 64
14 G1/2-7/8 MT 1212 D19 14 W 12 12.0 4 19.0 84
14 G1/2-7/8 MT 1212 D26 14 W 12 12.0 4 26.3 84
11 G 1 MT 1212 C24 11 W 12 12.0 3 24.2 84
11 G 1 MT 1616 D38 11 W 16 16.0 4 38.1 105
11 G 1 MT 2020 E47 11 W 20 20.0 5 47.3 105
Order example: MT 1212 D19 14 W MT7
For small thread mills see pages B09-7, B09-14 and B11-5
For thread mills with coolant see next page
First choice Alternative
B08-14