Cobalt Steel Drill Bits
HSS M35 Brocas Drill Bits Co5% Cobalt Jobber Length Twist Drill Bit 135 Degree Split Point for Stainless Steel Aluminum
- Using high-quality high-speed steel, through special treatment.
- Processed iron, steel, copper, Aluminum, and other metal materials.
- Durable, mainly used for bore machining.
- 135° Split Point Design Makes it Easier to Drill Repeated Holes in Harder Materials.
- It is super heat resistant and wear resistance can cut hard metals quickly.
- Product Details
- Factory
- Material
Product Description
Product name
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HSS cobalt drill bits are especially for drilling in hard and abrasive materials with higher red hardness
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Surface
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White, black, Tin coated, amber finish, gold color, or as your request
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Process
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Roll forged, edge ground, fully ground, milled
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Sharpening
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118 degree, 135 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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Why do you need to choose?
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1) Amber color finished and surface treatment for lasting -longer life and better performance in drilling 2) Best design of helix
flute to enable the fast removal of debuts and chips, Fully Ground flute ensure quick drilling 3) Straight round shank to ensure
better chucking 4) 135-degree split point ensures best self-centering and positioning, without pre-drilling
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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 |
Factory
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