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Grinded twist drill bit with parallel shank DIN 338 NWKa
Do you need a drill bit for machining steel, cast iron, aluminum or plastics? Wondering which drill bit will work best for you? Discover how to choose the perfect tool for your needs in our guide.
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Ground twist drill bit with cylindrical shank DIN 338 NWKa for machining steel, cast iron, aluminum and plastics
The DIN 338 NWKa cylindrical shank ground twist drill bit is a tool for machining materials such as steel, cast iron, aluminum and plastics. Drills of this type are available in various material designs, the most common of which are HSS (High-Speed Steel) and HSS-E (High-Speed Steel with Cobalt). The choice of drill bit material depends mainly on the type of material to be machined and the strength and durability requirements of the tool. Here are some tips for choosing the right drill bit:
1. HSS (High-Speed Steel) Drills:
- They work well for machining steel, cast iron and aluminum, especially for standard drilling operations.
- They are a more economical choice compared to HSS-E drills.
- They are not as heat resistant as HSS-E drills, so they can wear out faster with heavy use.
2. HSS-E (High-Speed Steel with Cobalt) Drills:
- They contain added cobalt, which makes them more durable and resistant to high temperatures.
- Ideal for machining steel, especially stainless steel and other hard-to-machine materials.
- They provide better durability and performance compared to standard HSS drills, which can be important for heavy use in industrial settings.
Before making a choice, it is important to carefully evaluate the material to be machined and the type of operation to be drilled. When in doubt, it is always a good idea to consult a tool manufacturer or cutting tool specialist.
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| Drill tip angle | Cylindrical shank smooth in accordance with DIN 1835-A | Tool made of HSS steel | Tool made of HSS-E steel |
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HSS |
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| Non-alloy steels | Grey cast iron | Ductile Iron, Malleable Cast Iron | |
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HSS-E |
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| Aluminum, copper | Aluminum alloys, copper alloys | Plastics |
| D | I | L | DIN 388 HSS | DIN 338 HSS-E |
|---|---|---|---|---|
| index 0641-229 | index 0641-229 | |||
| 0,5 | 6 | 22 | -200-050 | -300-050 |
| 1 | 12 | 34 | -200-100 | -300-100 |
| 1,5 | 18 | 40 | -200-150 | -300-150 |
| 2 | 24 | 49 | -200-200 | -300-200 |
| 2,5 | 30 | 57 | -200-250 | -300-250 |
| 3 | 33 | 61 | -200-300 | -300-300 |
| 3,2 | 36 | 65 | -200-320 | -300-320 |
| 3,3 | 39 | 70 | -200-330 | -300-330 |
| 3,4 | 39 | 70 | -200-340 | -300-340 |
| 3,5 | 39 | 70 | -200-350 | -300-350 |
| 4 | 43 | 75 | -200-400 | -300-400 |
| 4,2 | 43 | 75 | -200-420 | -300-420 |
| 4,5 | 47 | 80 | -200-450 | -300-450 |
| 4,8 | 52 | 86 | -200-480 | -300-480 |
| 5 | 52 | 86 | -200-500 | -300-500 |
| 5,5 | 57 | 93 | -200-550 | -300-550 |
| 6 | 57 | 93 | -200-600 | -300-600 |
| 6,5 | 63 | 101 | -200-650 | -300-650 |
| 6,8 | 69 | 109 | -200-680 | -300-680 |
| 7 | 69 | 109 | -200-700 | -300-700 |
| 7,5 | 69 | 109 | -200-750 | -300-750 |
| 8 | 75 | 117 | -200-800 | -300-800 |
| 8,5 | 75 | 117 | -200-850 | -300-850 |
| 8,8 | 81 | 125 | -200-880 | -300-880 |
| 9 | 81 | 125 | -200-900 | -300-900 |
| 9,5 | 81 | 125 | -200-950 | -300-950 |
| 10 | 87 | 133 | -201-000 | -301-000 |
| 10,2 | 87 | 133 | -201-020 | -301-020 |
| 10,5 | 87 | 133 | -201-050 | -301-050 |
| 10,8 | 94 | 142 | -201-080 | -301-080 |
| 11 | 94 | 142 | -201-100 | -301-100 |
| 11,5 | 94 | 142 | -201-150 | -301-150 |
| 11,8 | 94 | 142 | -201-180 | -301-180 |
| 12 | 101 | 151 | -201-200 | -301-200 |
| 12,5 | 101 | 151 | -201-250 | -301-250 |
| 13 | 101 | 151 | -201-300 | -301-300 |
| 13,5 | 108 | 160 | -201-350 | -301-350 |
| 14 | 108 | 160 | -201-400 | -301-400 |
| 14,5 | 114 | 169 | -201-450 | -301-450 |
| 15 | 114 | 169 | -201-500 | -301-500 |
| 15,25 | 120 | 178 | -201-525 | --- |
| 15,5 | 120 | 178 | -201-550 | -301-550 |
| 16 | 120 | 178 | -201-600 | -301-600 |
| 16,5 | 125 | 184 | -201-650 | -301-650 |
| 17 | 125 | 184 | -201-700 | -301-700 |
| 17,5 | 130 | 191 | -201-750 | -301-750 |
| 18 | 130 | 191 | -201-800 | -301-800 |
| 18,5 | 135 | 198 | -201-850 | -301-850 |
| 19 | 135 | 198 | -201-900 | -301-900 |
| 19,5 | 140 | 205 | -201-950 | -301-950 |
| 20 | 140 | 205 | -202-000 | -302-000 |
| On special order we make tools with dimensions other than those included in the table |
The tool described is a twist drill, a type of tool used for drilling holes in various materials such as steel, cast iron, aluminum and plastics. "Twist" refers to the shape of the drill bit, which has a spiral design that facilitates chip removal during drilling.
Describing further, "ground" means that the cutting edges of the drill bit have undergone a grinding process, which provides a sharper edge and better hole finish.
"Cylindrical shank" refers to a type of drill shank that is cylindrical and has a fixed diameter. This type of shank is commonly used in most standard drill bits.
"DIN 338" is a German standard that defines the dimensions and tolerances of a drill bit and other technical parameters. It is a DIN (Deutsches Institut für Normung) standard that ensures the uniformity and compliance of the drill bit with the specified requirements.
"NWKa" is probably a trade or manufacturer's designation, which may have its own specifications.
In summary, the tool described is a ground spiral drill bit with a cylindrical cylindrical shank, conforming to DIN 338, designed for machining a variety of materials such as steel, cast iron, aluminum and plastics.
0641-229 DIN 338 NWKa
Specific References
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Do you need a drill bit for machining steel, cast iron, aluminum or plastics? Wondering which drill bit will work best for you? Discover how to choose the perfect tool for your needs in our guide.