Page 332 - Carmex - Inch Catalog 2022

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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 mm Flutes

20 1/4 AMT 08048 C14 20 UN-C 8 .189 .27 3 .57 .61 2.5
18 5/16 AMT 1006 C17 18 UN-C 10 .236 .33 3 .69 .74 2.9
16 3/8 AMT 12074 C21 16 UN-C 12 .291 .39 3 .84 .89 3.3
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 mm Flutes

28 G1/16-G1/8 MT 0606 C9 28 W 6 .236 3 .38 2.3
19 G1/4-3/8 MT 0808 C14 19 W 8 .315 3 .55 2.5
14 G1/2-7/8 MT 1212 D19 14 W 12 .472 4 .75 3.3
14 G1/2-7/8 MT 1212 D26 14 W 12 .472 4 1.04 3.3
11 G 1 MT 1212 C24 11 W 12 .472 3 .95 3.3
11 G 1 MT 1616 D38 11 W 16 .630 4 1.50 4.1
11 G 1 MT 2020 E47 11 W 20 .787 5 1.86 4.1
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