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R Ruko
Art. no. 102633

Multi-flute step drill bit DIN 8378 Type N M4 HSS Cylindrical shank 90-degree pilot hole L.58mm

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HSS · Type N · Point angle 118° · Countersink angle 90° · Conical grinding · Short · Short and torsion-resistant drill · Suitable for use on CNC or NC machines · Drilling and countersinking are performed in one operation · For pilot holes for threads · Right-hand cutting · For efficient production of through holes and 90° countersinks for screw heads. Additional technical specifications: · Feed in steel up to 800 N: 0.03 mm/rev · Point angle: 118° · Type: N · Design: Pilot hole · Countersink angle: 90° · Flute length: 24 mm Note: The cutting speed depends on the large diameter, while the feed depends on the small diameter.
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