Drilling Tools Step drill HSS Cat. no. PN/mm2 MN/mm2 KHB S NN/mm2N/mm2 HSS Straight 107150 shank < 850 < 700 < 300 Titanium < 850 Nickel < 500 Alu < 600 107170 Design and use: - with 2 cutting edges and fixed centring point - CBN creep-feed ground - for burr-free drilling of sheet metal, tubes and profiled sections in materialsup to 6 mm, deburring up to 1.5 mm thickness 10 - no punching, no untrue holes - deburring through following diameter - achieved hole diameters can be read off from the laser scale marking at the tool 107150 107150 PRECITOOL, with straight groove 107170 PRECITOOL, with spiral flute X areamm 107150 107170 x of the individual boring steps l1 d2mmmm 4-12   4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 79 6 6-20   6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 70 9 6-30   6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 26 | 28 | 30 100 10 107170 Step drill set HSS Cat. no. PN/mm2 MN/mm2 KHB S NN/mm2N/mm2 HSS Straight 107155 shank < 850 < 700 < 300 Titanium < 850 Nickel < 500 Alu < 600 107175 Design: 107155: Set in plastic case compiled of step drills 107150. 107175: Set in plastic case compiled of step drills 107170. 107155 PRECITOOL, with straight groove 107175 PRECITOOL, with spiral flute X areamm 107155 107175 4-30   107155 107175 Step drill HSS Cat. no. PN/mm2 MN/mm2 KHB S NN/mm2N/mm2 HSS Straight 107190 < 850 < 700 < 300 Titanium < 850 Nickel < 500 Alu < 600 shank Design and use: - with two ground spiral flutes and deburring section for producing thread clearance holes for cable fittings - the steel conduit thread (PG gland) is replaced by the metric series - step increment 4 mm, 3 flats at shank - drills all core holes and through holes for metric threads M12-M32 107190 PRECITOOL, for cable glands X areamm 107190 l1mm d2mm 10,5-32,5  85 12 www.precitool.de 10/111