Bushing Drill

	Type N DIN 339
Manufacturing specifications	Point grinding: relieved cone Point angle: standard (118º) Web thinned: to DIN 1412, form A, from 2.36 mm diameter upwards Helix angle: standard Web thickness: greater than standard Web taper: standard Flute form: standard Tolerance on diameter: h8 Din 1809 tang from 3.00 mm diameter upwards. Other manufacturing specifications to DIN 1414.
Range of applications	An extremely high heat resistant bushing drill. For drilling alloyed and unalloyed steels, cast steels with tensile strength over 800 N/mm˛, especially hot forming tool steels and cold worked steels, anti-friction bearing steels, high alloyed steels as well as heat-treatable and case-hardening steels.
Sketch
Tool material
Cutting direction	right hand-cutting
Surface
Ø-range	1.10 - 19.00 mm
Series No.	311