Twist drills long

Catalog-No.
221
Web thinning ≥ Ø 15.000 • relieved cone • for deep holes
P M K N S H
ISO code

P Steel, high-alloyed steel
M Stainless steel
K Grey cast iron, spher, graphite/mall. cast iron
N Aluminium and other non-ferrous metals
S Special, super and titanium alloys
H Hardened steel and chilled cast iron
On the following programme pages you will find for every tool recommendations regarding suitability for the application groups and details of max. tensile strength and harness:
optimal suitability
limited suitability
hard and crumbly materials • brass, magnesium alloys • bronze, phosphor bronze • slate, mica, pertinax
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