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Subland stepped drill bit type N HSS
For thread core hole with countersink
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Application
For thread core holes in accordance with DIN 336 and 90° free countersink equivalent to through holes in accordance with DIN EN 20273. Countersink and thread core holes are manufactured in one machining step.
Execution
- Drill and countersink step with independent chip grooves and drill heels; regrinding does not affect the profile
Advantage
- precise alignment of drill diameter and countersink diameter, lower process costs
- universal use, therefore tool costs are reduced to a minimum and user flexibility is increased
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