Description

180° short subland drill for through holes Design: 180° countersink angle, medium. Application: For screw through holes according to DIN EN 20273 and 180° screw head countersinking. Form H, J and K according to DIN 84, DIN 912, DIN 6912, DIN 7513 and DIN 7984. Particularly suitable for CNC or NC machines.

Specifications

Bohrer-Ø d1 x Senker-Ø d2	4,5 x 8 mm
für Gewinde	M4
Gesamtlänge l1	79 mm
Spirallänge l2	37 mm
Bohrstufenlänge l3	11 mm
Gewinde	M4
Stähle bis 850 N/mm²	18
Stähle bis 1000 N/mm²	30
Gusseisenwerkstoffe	33
Kupfer, Messing, Bronzen	65

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