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HSS twist drill bit assortment 25 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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Variants
20 % lower infeed force compared to conventional drill bits as well as quicker progress and a more gentle way of working
Optimised split point design
Precise drilling without centring, even on curved surfaces
Optimised split point
Ideal for core drill holes
Very precise point thinning for precise drill holes
Excellent adhesive properties of cooling lubricants and a reduced tendency towards the build-up of material deposits
Vaporised surface
When using the twist drill bits according to DIN 340, prior drilling of a centring bore is recommended. Our NC spotting drills (art. no. 063644...) are ideal for this purpose.
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