Strongest Drill Bits
Are you struggling to source HSS twist drill bits that offer stable quality, smooth drilling, and reliable bulk supply?
- Work directly with a manufacturer to reduce sourcing costs and improve your profit margin.
- Strict production standards ensure reliable drill bits.
- Wide size range for market coverage
- Custom packaging and logo laser/engraved on the drill bit’s shank
- Samples can be arranged quickly to help you confirm the quality.
- OEM & Custom Options
- Exhibition
- Certificate
- Production Process
- Quality Control
- Material
- Product Details
- Custom size range (Normally 1-20mm)
- Custom packaging (Transparent Box, Yellow Box, Blue Box, Color Paper Bag, Bosch Box, Rose Box)
- Customized logo on the drill bits’ shank
- Surface finish customization (Bright, Black Oxide, Titanium Coated, Rainbow, Gold and Black and others)
- Drill bit set combinations (19pcs, 25pcd, 29pcs and others)
To ensure consistent performance, each drill bit is inspected before shipment:
DIN338 Jobber Length HSS Twist Drill Bit for Stainless Steel Metal Aluminium PVC Iron Drilling
The head adopts of special grinding blade with high hardness, durable in use
Double back Angle processing, improve positioning accuracy, reduce cutting resistance, with longer service life;
Features Smooth chip removal and high efficiency;
Universal round and straight handle design, convenient for electric drill, bench drill, etc.
They are great for most drilling jobs and materials such as aluminum, wood, plastics.
1. PREMIUM MATERIAL:High Grade M2 High Speed Steel with best heat-treatment to ensure the high hardness over HRC 62-65, and wear-resistance, abrasion-resistance, high red hardness.
2. BEST CUTTING TIP:135 Deg. Split Point Drill Angle to guarantee the best self-centering and positioning and drill smooth and quicker than normal point angle.
3. FLUTE FIGURES:The Best efficient Helix is to keep the quickest removal of chips and debris through flute during penetration of workpiece.
4. SURFACE TREATEMTN:Bright finished nitrided to enable the high hardness of surface and wear-resistance to keep long tooling life.
5. APPLICATION:Applicable for variety of material drilling, such as Carnon steel, Alloy steel, metal, iron, cast iron, copper alloy, aluminum, plastic…
Hss Twist Drill Bit Black Surface
- Made of M2 high-speed steel, this drill bit is extremely sharp and capable.
- Drilling through a variety of materials including steel, cast iron, copper, aluminum alloy, wood, plastic, and other hard metals.
- Wear resistance and durability.
- The spiral groove design provides superior chip removal performance.
- The 135 tip & twist design increases the cutting speed with self-centering and prevents walking.
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Product name
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High-Speed Steel HSS Twist Drill Bits Straight Shank Drill Bit
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Surface
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Black (White, Tin coated, amber finish, gold color, or as your request)
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Process
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Fully ground (Roll forged, edge ground, milled)
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Sharpening
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135 degree,(118 degrees, turbo max or as your request)
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Standards
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DIN338,DIN1897,DIN340,DIN1869,DIN345,DIN333 Jobber Length, Screw Machine Length, Taper Length, Aircraft Extension, Taper Shank
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Material
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HSS4241 , HSS4341 , HSS6542(M2) , HSS CO5% (M35) , HSS CO8%(M42)
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Shank
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Straight Shank (Parallel Shank), Reduced Shank, Hex Shank,1/4″ Quick Change Shank,3 Flats Shank, 1/2″ Shank,3/8″ Shank
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Use
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For drilling metal, wood concrete, and so on
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Helix Angle
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Type N. Type W, Type H.
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Rotating
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Right Hand, Left Hand
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Flute
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Normal Parabolic
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| Product Size | |||||
| DIN338 | |||||
| Diameter(mm) | Flute Length(mm) | Overall Length(mm) | Diameter(mm) | Flute Length(mm) | Overall Length(mm) |
| 0.5 | 6 | 22 | 9.5 | 81 | 125 |
| 1.0 | 12 | 34 | 10.0 | 87 | 133 |
| 1.5 | 20 | 43 | 10.5 | 87 | 133 |
| 2.0 | 24 | 49 | 11.0 | 94 | 142 |
| 2.5 | 30 | 57 | 11.5 | 94 | 142 |
| 3.0 | 33 | 61 | 12.0 | 101 | 151 |
| 3.2 | 36 | 65 | 12.5 | 101 | 151 |
| 3.5 | 39 | 70 | 13.0 | 101 | 151 |
| 4.0 | 43 | 75 | 13.5 | 108 | 160 |
| 4.2 | 43 | 75 | 14.0 | 108 | 160 |
| 4.5 | 47 | 80 | 14.5 | 114 | 169 |
| 4.8 | 52 | 86 | 15.0 | 114 | 169 |
| 5.0 | 52 | 86 | 15.5 | 120 | 178 |
| 5.2 | 52 | 86 | 16.0 | 120 | 178 |
| 5.5 | 57 | 93 | 16.5 | 125 | 184 |
| 6.0 | 57 | 93 | 17.0 | 125 | 184 |
| 6.5 | 63 | 101 | 17.5 | 130 | 191 |
| 7.0 | 69 | 109 | 18.0 | 130 | 191 |
| 7.5 | 69 | 109 | 18.5 | 135 | 198 |
| 8.0 | 75 | 117 | 19.0 | 135 | 198 |
| 8.5 | 75 | 117 | 19.5 | 140 | 205 |
| 9.0 | 81 | 125 | 20.0 | 140 | 205 |
| Jobber Length Fraction | |||||
| Diameter (Inch) | Flute Length(Inch) | Overall Length(mm) | Diameter (Inch) | Flute Length(Inch) | Overall Length(mm) |
| 3/64″ | 3/4″ | 1-3/4″ | 25/64″ | 3-3/4″ | 5-1/8″ |
| 1/16″ | 7/8″ | 1-7/8″ | 13/32″ | 3-7/8″ | 5-1/4″ |
| 5/64″ | 1″ | 2″ | 27/64″ | 3-15/16″ | 5-3/8″ |
| 3/32″ | 1-1/8″ | 2-1/4″ | 7/16″ | 4-1/16″ | 5-1/2″ |
| 7/64″ | 1-1/2″ | 2-5/8″ | 29/64″ | 4-3/16″ | 5-5/8″ |
| 1/8″ | 1-5/8″ | 2-3/4″ | 15/32″ | 4-5/16″ | 5-3/4″ |
| 9/64″ | 1-3/4″ | 2-7/8″ | 31/64″ | 4-3/8″ | 5-7/8″ |
| 5/32″ | 2″ | 3-1/8″ | 1/2″ | 4-1/2″ | 6″ |
| 11/64″ | 2-1/8″ | 3-1/4″ | 33/64″ | 4-13/16″ | 6-5/8″ |
| 3/16″ | 2-5/16″ | 3-1/2″ | 17/32″ | 4-13/16″ | 6-5/8″ |
| 13/64″ | 2-7/16″ | 3-5/8″ | 35/64″ | 4-13/16″ | 6-5/8″ |
| 7/32″ | 2-1/2″ | 3-3/4″ | 9/16″ | 4-13/16″ | 6-5/8″ |
| 15/64″ | 2-5/8″ | 3-7/8″ | 37/64″ | 4-13/16″ | 6-5/8″ |
| 1/4″ | 2-3/4″ | 4″ | 19/32″ | 5-3/16″ | 7-1/8″ |
| 17/64″ | 2-7/8″ | 4-1/8″ | 39/64″ | 5-3/16″ | 7-1/8″ |
| 9/32″ | 2-15/16″ | 4-1/4″ | 5/8″ | 5-3/16″ | 7-1/8″ |
| 19/64″ | 3-1/16″ | 4-3/8″ | 41/64″ | 5-3/16″ | 7-1/8″ |
| 5/16″ | 3-3/16″ | 4-1/2″ | 21/32″ | 5-3/16″ | 7-1/8″ |
| 21/64″ | 3-5/16″ | 4-5/8″ | 43/64″ | 5-5/8″ | 7-5/8″ |
| 11/32″ | 3-7/16″ | 4-3/4″ | 11/16″ | 5-5/8″ | 7-5/8″ |
| 23/64″ | 3-1/2″ | 4-7/8″ | |||
| 3/8″ | 3-5/8″ | 5″ | |||
| Jobber Length Number | |||||
| Diameter | Flute Length(Inch) | Overall Length(mm) | Diameter | Flute Length(Inch) | Overall Length(mm) |
| 1# | 2-5/8″ | 3-7/8″ | 31″ | 1-5/8″ | 2-3/4″ |
| 2# | 2-5/8″ | 3-7/8″ | 32″ | 1-5/8″ | 2-3/4″ |
| 3# | 2-1/2″ | 3-3/4″ | 33″ | 1-1/2″ | 2-5/8″ |
| 4# | 2-1/2″ | 3-3/4″ | 34″ | 1-1/2″ | 2-5/8″ |
| 5# | 2-1/2″ | 3-3/4″ | 35″ | 1-1/2″ | 2-5/8″ |
| 6# | 2-1/2″ | 3-3/4″ | 36″ | 1-7/16″ | 2-1/2″ |
| 7# | 2-7/16″ | 3-5/8″ | 37″ | 1-7/16″ | 2-1/2″ |
| 8# | 2-7/16″ | 3-5/8″ | 38″ | 1-7/16″ | 2-1/2″ |
| 9# | 2-7/16″ | 3-5/8″ | 39″ | 1-3/8″ | 2-3/8″ |
| 10# | 2-7/16″ | 3-5/8″ | 40″ | 1-3/8″ | 2-3/8″ |
| 11# | 2-5/16″ | 3-1/2″ | 41″ | 1-3/8″ | 2-3/8″ |
| 12# | 2-5/16″ | 3-1/2″ | 42″ | 1-1/4″ | 2-1/4″ |
| 13# | 2-5/16″ | 3-1/2″ | 43″ | 1-1/4″ | 2-1/4″ |
| 14# | 2-3/16″ | 3-3/8″ | 44″ | 1-1/8″ | 2-1/8″ |
| 15# | 2-3/16″ | 3-3/8″ | 45″ | 1-1/8″ | 2-1/8″ |
| 16# | 2-3/16″ | 3-3/8″ | 46″ | 1-1/8″ | 2-1/8″ |
| 17# | 2-3/16″ | 3-3/8″ | 47″ | 1″ | 2″ |
| 18# | 2-1/8″ | 3-1/4″ | 48″ | 1″ | 2″ |
| 19# | 2-1/8″ | 3-1/4″ | 49″ | 1″ | 2″ |
| 20# | 2-1/8″ | 3-1/4″ | 50″ | 1″ | 2″ |
| 21# | 2-1/8″ | 3-1/4″ | 51″ | 1″ | 2″ |
| 22# | 2″ | 3-1/8″ | 52″ | 7/8″ | 1-7/8″ |
| 23# | 2″ | 3-1/8″ | 53″ | 7/8″ | 1-7/8″ |
| 24# | 2″ | 3-1/8″ | 54″ | 7/8″ | 1-7/8″ |
| 25# | 1-7/8″ | 3″ | 55″ | 7/8″ | 1-7/8″ |
| 26# | 1-7/8″ | 3″ | 56″ | 3/4″ | 1-3/4″ |
| 27# | 1-7/8″ | 3″ | 57″ | 3/4″ | 1-3/4″ |
| 28# | 1-3/4″ | 2-7/8″ | 58″ | 11/16″ | 1-5/8″ |
| 29# | 1-3/4″ | 2-7/8″ | 59″ | 11/16″ | 1-5/8″ |
| 30# | 1-5/8″ | 2-3/4″ | 60″ | 11/16″ | 1-5/8″ |
| Jobber Length Letter | |||||
| Diameter | Flute Length(Inch) | Overall Length(mm) | Diameter (Inch) | Flute Length(Inch) | Overall Length(mm) |
| A | 2-5/8″ | 3-7/8″ | N | 3-1/16″ | 4-3/8″ |
| B | 2-3/4″ | 4″ | O | 4-1/2″ | 4-1/2″ |
| C | 2-3/4″ | 4″ | P | 4-5/8″ | 4-5/8″ |
| D | 2-3/4″ | 4″ | Q | 4-3/4″ | 4-3/4″ |
| E | 2-3/4″ | 4″ | R | 4-3/4″ | 4-3/4″ |
| F | 2-7/8″ | 4-1/8″ | S | 4-7/8″ | 4-7/8″ |
| G | 2-7/8″ | 4-1/8″ | T | 4-7/8″ | 4-7/8″ |
| H | 2-7/8″ | 4-1/8″ | U | 5″ | 5″ |
| I | 2-7/8″ | 4-1/8″ | V | 3-5/8″ | 5″ |
| J | 2-7/8″ | 4-1/8″ | W | 3-3/4″ | 5-1/8″ |
| K | 2-15/16″ | 4-1/4″ | X | 3-3/4″ | 5-1/8″ |
| L | 2-15/16″ | 4-1/4″ | Y | 3-7/8″ | 5-1/4″ |
| M | 3-1/16″ | 4-3/8″ | Z | 3-7/8″ | 5-1/4″ |
| * Custom-tailor would be available against customers’ requirements | |||||
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Frequently Asked Questions
Q: What Does HSS Mean on a Drill Bit?
A: HSS stands for High Speed Steel, a type of tool steel designed to withstand high temperatures without losing hardness. It offers a balance of durability, cutting speed, and cost efficiency.
Q: High Speed Steel Drill Bits Used For?
A: High Speed Steel (HSS) drill bits are used for drilling materials such as steel, aluminum, copper, wood, stainless steel and plastic. High-speed steel that has been quenched has a long tool life.
Q: How to Make a Twist Drill Bit Cut Faster?
A: To make an HSS drill bit cut faster, use the correct drilling speed, apply proper feed pressure, and ensure the bit is sharp. Using Coolant fluid/Cooling Oil when drilling metal can also reduce heat and improve cutting efficiency.
Q: Can HSS Drill Bits be Used for Steel?
A: Yes, HSS drill bits are designed for drilling steel and other metals. They perform well on mild steel, alloy steel, and non-ferrous metals.
Q: Are Cobalt Drill Bits Better than HSS?
A: Cobalt drill bits (such as M35 Co5% or M42 Co8%) are an upgraded version of HSS with added cobalt for harder material drilling and longer tool life. And the standard HSS drill bits are more economical for general use.
Q: Are HSS Drill Bits for Metal?
A: Yes, HSS drill bits are primarily designed for metal drilling. They can also be used on wood and plastic, but their main advantage is maintaining hardness at high temperatures during drilling.