Mitsubishi MMT16IRAG55-S VP15TF Internal Threading Insert CCGT09T304ER-U TN60 We use these on 4140

We use these on 4140 steel

Note that the inserts are not in the package

Manual lathes equipped with 12mm seating holders

UC5115 (The All-Rounder): Best for general-purpose use

Mitsubishi MMT16IRAG55-S VP15TF Internal Threading Insert CCGT09T304ER-U TN60 We use these on 4140MMT16IRAG55 S VP15TF Mitsubishi Materials Internal Partial Profile 55 AG (Whitworth BSP BSW) The Mitsubishi MMT16IRAG55 S VP15TF is a highly versatile internal threading insert engineered for 55 degree profiles. The "AG" designation identifies this as an expanded range partial profile tool, capable of cutting pitches from 0. 5mm to 3. 0mm (48 to 8 TPI). It is the professional choice for CNC threading of internal pipe threads (G Rp Rc) and Whitworth