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Description
Technical data of drill bit for metal Fi 0,38
| Technical data | |
|---|---|
| Working diameter of drill bit d | fi 0,38 mm |
| Overall length l1 | 19 mm |
| Length of working part l2 | 4 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 0,38 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 | 11733 | 587 |
| K | Cast iron | 10-18 | 0,05 | 8381 | 419 |
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Cutting parameters calculator
Drill fi 0.38 with cylindrical shank
The 0.38 mm HSS DIN 338metal drill bit is used for precision micro-diameter drilling in structural steels and non-ferrous alloys; in workshop applications, it provides a stable cutting path and diameter control in IT12 grade.
The working diameter is 0.38 mm, the point of the blade is formed at an angle of 118 degrees, and the spiral ground grooves promote effective chip evacuation in the right cutting direction. The body is made of homogeneous high-purity high-speed steel, which promotes wear resistance and maintains edge sharpness. The length execution corresponds to the normal length according to DIN 338. For process stabilization, high speed, micrometer feed, precision chuck and emulsion or oil mist cooling are recommended; under these conditions, IT12 workshop tolerance can be maintained.
- Repeatability of the IT12 dimension - a stable dimension supports a fi 0.38 mm metal drill with rigid clamping and selected cutting parameters.
- Edge durability - high-speed steel with a homogeneous microstructure extends service life in unit and short-run machining.
- Reliable start and guidance - 118-degree geometry reduces entry drift and improves drilling alignment.
- Smooth hole walls - polished channels reduce friction, improving surface quality and clean exit edges.
Compliance with DIN 338 makes it easy to install in standard holders, and the holes obtained qualify for class IT12 according to EN ISO 286. In practice, even at full throughput, predictable diameter and alignment are maintained; this applies to drillings described by the formulation fi 0.38 mm drill for steel and drillings in materials with low to medium hardness.
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All orders are delivered by courier company GLS. For orders exceeding 369 PLN gross shipping is FREE
| 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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