PFERD HSS countersink KES HSS DIN 335 C90° HC-FEP 8.3 // high-performance countersink tools with a countersink angle of 90° for countersinking 90° screws for particularly tough and hard materials such as alloyed and high-strength steel and stainless steel (INOX). Thanks to the HICOAT coating HC-FEP they have a high hardness and wear resistance. They are very temperature-resistant and have a particularly long service life. They can also be used in the higher cutting speed range and without coolants and lubricants. // Design: HICOAT coating HC-FEP // Diameter: 8.30 mm // Shaft diameter: 6.0 mm // Total length: 50 mm // Countersink angle: 90° // Machinable materials: steel, cast steel, stainless steel (INOX), non-ferrous metals, cast iron, plastics, other materials // Processing tasks: chamfering, deburring, countersinking // Recommended use: observe. The speed of rotation speed recommendations. Use the PFERD speed calculator at www.pferd.com. // Suitable tool drives: drill, stand drill, machine tools, robots