Cutting tool including a locking screw and adapter with coolant delivery

A cutting tool in fluid communication with a coolant source, the cutting tool comprising:

• a cutter body adapted to carry a cutting insert, the cutter body containing a cutter body coolant passage;
• an adapter containing a first adapter bore in fluid communication with the coolant source;
• a locking screw, the locking screw engaging the adapter so as to secure the cutter body to the adapter;
• a coolant volume being defined in a vicinity of a meeting of the cutter body, the adapter and the locking screw;
• the locking screw containing a locking screw bore in fluid communication with the first adapter bore, the locking screw further containing a peripheral locking screw bore passage in fluid communication with the coolant volume and the locking screw bore;
• the locking screw bore being in fluid communication with the cutter body coolant passage;
• and
• the coolant volume being in fluid communication with the cutter body coolant passage.