Best M42 Cobalt Drill Bits
3 Steps Design M42 Co8% Cobalt Drill Bits for Stainless Hard Metal
- Top-quality drill bit that can handle even the toughest materials.
- Made from premium M42 8% cobalt steel.
- Make it ideal for repeated use.
- It also features a three-step design for cutting through stainless steel, hard metals, aluminum, and plastic.
- Despite its higher price tag, the cobalt drill bit is actually more cost-effective
- Product Details
- Factory
- Material
| Product Description | |
| More Choice For You: Home > Cobalt Drill Bit | |
| Product Name | 3 Steps Design M42 Co8% Cobalt Drill Bits for Stainless Hard Metal |
| Size | 1-13mm |
| Material | M35 (Co5%), M42 (Co8%) |
| Flute Type | Single Flute |
| Shank | Round Shank (We also Have Reduced Shank, Taper Shank, Hex Shank) |
| Surface Finish | Amber (We also have Black Oxide) |
| Package | 10 or 5pcs in One Plastic Box |
| 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 | |||||
Hss twist drill bits, black and gold surface provide a protection to prevent rusty. Drilling accurate without a center punch tool, it can drill in general metal drilling. 135 degree split point eliminate drill walking on work-pieces. High quality guarantee hss twist drill bits!
- Material: M2 HSS 6542
- Surface: Black & Gold
- Use: Metal Drilling
Hss twist drill bits for drilling on copper, stainless steel, iron and other materials.
Hss twist Drill Bits use long life, Factory price.
- Surface: Black and Gold
- Material: M2 HSS 6542
