® 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      PitchTPI UNC UNF UNEF Ordering Code d D Df No. ofFlutes I If L 20 1/4 AMT 08048 C14 20UN-C 8 4.8 6.8 3 14.6 15.6 64 18 5/16 AMT 1006 C17 18UN-C 10 6.0 8.4 3 17.6 18.8 73 16 3/8 AMT 12074 C21 16UN-C 12 7.4 10.0 3 21.4 22.7 84 Order example: AMT 12074 C21 16UN-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      PitchTPI Standard Ordering Code d D No. ofFlutes I L 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