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Twist drill bit assortment HSS DIN 340 type RN 130°
19 pieces. Long steel precision drill bits for deep drilling in steel up to 850 N/mm² strength and in cast iron.
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20% lower infeed force compared to conventional drill bits as well as quicker progress and a more gentle way of working
Optimised cross thinning
Precise spot drilling without centring, even on curved surfaces
Optimised split point
Ideal for core drill holes
Very precise point geometry for accurate drill holes
Excellent adhesive capability of coolant lubricants and reduced tendency for material to build up
Vaporised surface
- When using the twist drill in line with DIN 340, it is advisable to make a centring hole first. Our NC spotting drills (art. no. 063644...) are ideal for this purpose.
- See overview tables for drill bit/material assignments
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