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Description
Technical data of drill bit for metal Fi 0,4
| Technical data | |
|---|---|
| Working diameter of drill bit d | fi 0,4 mm |
| Overall length l1 | 20 mm |
| Length of working part l2 | 5 mm |
- Drill bit made according to DIN-338
- Possible drilling to a hardness of 35 HRC
- Blade angle of 118 degrees suitable for drilling in steel, cast steel
- Made of the best grade of high speed steel HSS ( High speed steel )
- Makes a hole in h8 tolerance
- Low roughness of the hole
Cutting parameters of drill fi 0,4 mm HSS NWKa
| ISO symbol | Material | Cutting speed Vc [m/min] | Feed per revolution f [mm] | Revolutions n [obr/min] | Total feed rate [mm/min] |
|---|---|---|---|---|---|
| P | Steel | 14-25 | 0,05 | 11146 | 557 |
| K | Cast iron | 10-18 | 0,05 | 7962 | 398 |
May be useful
Cutting parameters calculator
Drill fi 0.4 with cylindrical shank
The 0.4 mm HSS DIN 338metal drill bit is designed for making micro-holes in structural steels, cast iron and non-ferrous alloys; under workshop conditions, it maintains a stable trajectory and makes it possible to achieve accuracy class IT12 with rigid clamping and correct cutting parameters.
The nominal diameter is 0.4 mm. The 118-degree tip angle promotes secure entry into the material, and helical ground grooves ensure continuous chip evacuation with the right cutting direction. The core of homogeneous high-speed steel features high wear resistance to help maintain a sharp edge. Length execution according to DIN 338 (normal length) supports favorable rigidity of the system; in practice, dimensional stability is confirmed by the fi 0.4 mm steel drill at high speeds, micrometer feed, precise clamping and emulsion or oil mist cooling.
- Secure start and alignment - 118-degree geometry reduces drift and organizes the drilling path already at the entrance.
- Even wall surface - polished channels reduce friction, reducing burr formation at the exit.
- Repeatability of IT12 grade - dimension is maintained with proper selection of feed, speed and rigidity of the system.
- Blade durability - homogeneous high-speed steel ensures edge stability in unit and short-run cycles.
Compliance with DIN 338 facilitates installation in typical chucks, and the holes produced qualify for IT12 according to PN-EN ISO 286. In configurations described by the phrase drill fi 0.4 mm for steel, predictable diameter and alignment are maintained in solid drilling and on thin-walled workpieces; as a result, drill fi 0.4 mm for metal offers stable micro-hole geometry with proper cooling and feed control.
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| Courier GLS | Przelew24 / Prepayment | 14,76 zł gross | Delivery time 1 working day |
| Courier GLS | Cash on delivery | 17,26 zł gross | Lead time 1 working day |
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