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Stepped twist drill bit, plain HSS

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Stepped twist drill bit, plain HSS

Extremely versatile and fast spiral step drill bit with an exceptionally long service life.

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Available in 1 version

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Precise spot drilling


Thanks to self-centring drill tip



Up to 30% faster


In comparison with competitor products thanks to optimally tailored cutting edge geometry



Up to double the service life


In comparison with competitor products thanks to reduction of wear on the drill tip and the main cutting edges, as well as on the radial and axial relief grinding.



No slipping in the drill chuck


Thanks to 3-face shank and 1/4 inch bit holder



Precise working


Thanks to laser-inscribed diameters in both spiral grooves



Very little reworking required


Thanks to precise, circular drilling holes

Notice

Ensure that there is sufficient cooling/lubrication. Make sure that the feed is even. Observe the speed table.



0694422637- Core and through-holes for PG thread in accordance with DIN 40430, centre drill bit 6 mm



0694422640 - Specially for metric ISO through-holes and threaded core holes in accordance with DIN 60423, centre drill bit 6 mm