Spiral drill INOX dia. 4.7 mm HSS-E Co5 N DIN 338 135 for tough and hard materials Angle135 Diameter4.7 mm Flute length47 mm Length, total86 mm RPM from, grey cast iron, white cast iron678 RPM RPM from, hard non-ferrous metals1694 RPM RPM from, rust and acid-resistant steels678 RPM RPM from, soft non-ferrous metals2033 RPM RPM from, steels over 700 N/mm1355 RPM RPM from, thermoplastics, fibre-reinforced plastics (GRP/CRP) 1016 RPM RPM to, grey cast iron, white cast iron1694 RPM RPM to, hard non-ferrous metals3388 RPM RPM to, rust and acid-resistant steels1355 RPM RPM to, soft non-ferrous metals4066 RPM RPM to, steels over 700 N/mm1694 RPM RPM to, thermoplastics, fibre-reinforced plastics (GRP/CRP) 2710 RPM Spiral angle, from36 VersionINOX Drilling tools with cross grinding for industrial uses. Fully ground, right-hand turning versions that produce precise drill holes thanks to their high concentricity and exact centring. PFERD offers spiral drills in the STEEL (118 point angle)