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NBN ISO 3294:2021
Parallel shank countersinks for angles 60, 90 and 120 degrees inclusive
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Summary
This International Standard specifies the dimensions of parallel shank countersinks for angles 60°, 90°
and 120° inclusive.
It specifies dimensions in metric units only, these being regarded as the only recommended dimensions
in the future, for countersinks with cutting diameters in the range 8 mm to 25 mm.
The dimensions apply only to tools made from high-speed steel. However, if the method of production
allows, the shanks may be manufactured from a suitable alternative material, such as a carbon steel.
Unless otherwise indicated, the countersinks will be right-hand cutting.
Morse taper shank countersinks are the subject of ISO 3293.
and 120° inclusive.
It specifies dimensions in metric units only, these being regarded as the only recommended dimensions
in the future, for countersinks with cutting diameters in the range 8 mm to 25 mm.
The dimensions apply only to tools made from high-speed steel. However, if the method of production
allows, the shanks may be manufactured from a suitable alternative material, such as a carbon steel.
Unless otherwise indicated, the countersinks will be right-hand cutting.
Morse taper shank countersinks are the subject of ISO 3293.
Technical characteristics
| Publisher | Bureau de Normalisation Belge (NBN) |
| Publication Date | 06/07/2021 |
| Page Count | 12 |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
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07/06/2021
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