Product specification
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Straight shank subland drill for drilling clearence holes, 90°, HSS, DIN 8374, 7,8x4,3 mm, M4-90°
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| Ø D | 7,8 mm |
| L | 117 mm |
| l | 75 mm |
| Weight | 0,025 kg |
| Helix Angle | λ = 25°÷30° |
| Point angle | ε = 118°/90° |
| Material | HSS - high-speed steel |
| Manufacturing Mode | V - ground from solid |
Usage
Subland drills with four lands are recommended for drilling of clearing holes and simultaneously countersinking in parts made of unalloyed or alloyed steel, cast steel up to 800 N/mm2, grey-, malleable- or nodular cast iron, Al-alloys etc. It is necessary to choose the lower cuttting conditions for drilling than the guidelines for usual drilling declare. |
| Surface Treatment | without treatment |
| Grinding Mode | N - conical lip relief |
| Ø d | 4,3 mm |
| l1 | 11 mm |
| Screw | M4 |
| Note | PROFI tools |
Attachment:
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