Straight shank short step drills

Catalog-No.

379

Connection code machine side: straight shank

Web thinning ≥ Ø 6.000 • web thinning value refers to nom.-Ø d1 • relieved cone • very high torsional stability • for CNC- and NC machines • for through-holes to DIN EN 20273, series medium • for 180° countersink screw heads to DIN 974-1, series 1 • for screws DIN 6912, 7984, 34821, DIN EN ISO 1207, 4762, 14579, 14580 • f dependent on small diameter • vc dependent on large diameter

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