Tools & Gear Lathe & Milling Slot Drills

6000-5/16L 5/16" Long Threaded HSS Cobalt Slot Drill HSS-Co8 (Cobalt) centre cutting, long threaded, square end Sometimes referred to as two flute end mills. For general milling operations - creating slots and cavities. Commonly used when milling steels and non-ferrous materials that produce large chips. Fewer flutes are best for chip evacuation, keeping the bit cooler, but leave a rougher surface finish.