Burghiu spiral Format 11120040, 9111120040

90° multi-chamfer subland drill for through holes

Design:Profile grinding, right cutting, with precision ground point. Normal angle of rake, core thickness and core gradient. Drilling and countersinking are produced in a single step, aligned to each other. Ø Tolerance: d1 = h9 d2 = h8 Note: The cutting speed is orientated towards the large diameter, the feed towards the small diameter.

Design: DIN 8374, 90° countersink angle, fine. Application: For screw through holes according to DIN EN 20273 and 90° screw head countersinking. Form A and B according to DIN 74, part 1. For screws according to DIN 963 and DIN 964. With morse taper shank DIN 8375 available on request.