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Twist drill bit assortment DIN 338 HSS TIN head type RN
155-piece in system box, TiN head coated steel precision drill for general, broad applications in steel up to 850 N/mm² strength and cast iron.
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Variants
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Precise & Quick drilling
- The sturdy twist drill with its short design provides for precise drilling.
- Very precise tip and the related precise cutting geometry, a constant drilled-hole quality is ensured, ideal for core hole drilling.
- Optimized crosswise drill point narrowing provides 20% lower feed force saving compared with conventional drill bit.
Self-centering
The crosswise grinding ensures an excellent centering effect even on domed surfaces, eliminating the need for center-punching or piloting
Long tool life
The TiN coating increase the heat resistance up to 600º, which provides 3 times more tool life in comparison with a non-coated HSS drill.
The drill shank is turned from the 13.0 mm dia. to a 12.7 mm dia.
Steel
Select RAL-colour code
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