Komet precision tools india supplies drill-thread milling cutters. These are specially used for grey cast iron. Economic thread manufacturing includes drill-thread milling cutters [bgf] from 3el combine drilling, counter boring, and thread milling with one tool. They save minimum one tool change and assign thread -manufacturing to be carried out in a single operation. The economic advantage of these tools is that reducing machining time produces it as compared to conventional methods. In standard versions, the bgf drill-thread milling cutters are constructed with two flutes and appropriately large chip spaces to drill into solid. A new 4-flute version is designed especially to use in grey cast iron and permits even shorter cycle time for this. Double feeds are able to get at thread milling with the same feed per tooth. This reduces the cycle times by up to 30% as compared to the 2-flute version.