Cobalt Tipped Drill Bits

DIN1869 Hss M35 Co 5% Drill Bit Aircraft Extension Long Drill Bit

  • Made with high-quality HSS M35 cobalt steel
  • Designed for long drilling life and fast drilling performance.
  • Ember finished surface treatment adds extra hardness to the drill bit body.
  • With a split point angle of 135 degrees, this drill bit is self-centering and will not “walk” or “wander” while in use.
  • Cobalt Drill Bit will start on its own and penetrate quickly with less pressure.

Product Description

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Product Name DIN1869 Hss M35 Co 5% Drill Bit Aircraft Extension Long Drill Bit
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
DIN1869 R1 RN
Diameter (mm) Flute Length (mm) Overall Length (mm) Diameter (mm) Flute Length (mm) Overall Length (mm)
2.0 85 125 8.0 165 240
2.5 95 140 8.5 165 240
3.0 100 150 9.0 175 250
3.5 115 165 9.5 175 250
4.0 120 175 10.0 185 265
4.5 125 185 10.5 185 265
5.0 135 195 11.0 195 280
5.5 140 205 11.5 195 280
6.0 140 205 12.0 205 295
6.5 150 215 12.5 205 295
7.0 155 225 13.0 205 295
7.5 155 225
DIN1869 R2 RN
Diameter (mm) Flute Length (mm) Overall Length (mm) Diameter (mm) Flute Length (mm) Overall Length (mm)
3.0 130 190 8.5 210 305
3.5 145 210 9.0 220 320
4.0 150 220 9.5 220 320
4.5 160 235 10.0 235 340
5.0 170 245 10.5 235 340
5.5 180 260 11.0 250 365
6.0 180 260 11.5 250 365
6.5 190 275 12.0 260 375
7.0 200 290 12.5 260 375
7.5 200 290 13.0 260 375
8.0 210 305
DIN1869 R3 RN
Diameter (mm) Flute Length (mm) Overall Length (mm) Diameter (mm) Flute Length (mm) Overall Length (mm)
3.5 180 265 8.5 265 390
4.0 190 280 9.0 280 410
4.5 200 295 9.5 280 410
5.0 210 315 10.0 295 430
5.5 225 330 10.5 295 430
6.0 225 330 11.0 310 455
6.5 235 350 11.5 310 455
7.0 250 370 12.0 330 480
7.5 250 370 12.5 330 480
8.0 265 390 13.0 330 480
Aircraft Extension (6″, 12″)
Diameter (mm) Flute Length (mm) Overall Length (mm) Diameter (mm) Flute Length (mm) Overall Length (mm)
1/16″ 7/8″ 6″/12″ 1/4″ 2-3/4″ 6″/12″
5/64″ 1″ 6″/12″ 17/64″ 2-7/8″ 6″/12″
3/32″ 1-1/4″ 6″/12″ 9/32″ 2-15/16″ 6″/12″
7/64″ 1-1/2″ 6″/12″ 19/64″ 3-1/16″ 6″/12″
1/8″ 1-5/8″ 6″/12″ 5/16″ 2-2/16″ 6″/12″
9/64″ 1-3/4″ 6″/12″ 21/64″ 3-5/16″ 6″/12″
5/32″ 2″ 6″/12″ 11/32″ 3-7/16″ 6″/12″
11/64″ 2-1/8″ 6″/12″ 23/64″ 3-1/2″ 6″/12″
3/16″ 2-5/16″ 6″/12″ 3/8″ 3-5/8″ 6″/12″
13/64″ 2-7/16″ 6″/12″ 7/16″ 4-1/16″ 6″/12″
7/32″ 2-1/2″ 6″/12″ 1/2″ 4-1/2″ 6″/12″
15/64″ 2-5/8″ 6″/12″
* Custom-tailor would be available against customers’ requirements

 

HSS cobalt drill bits are more expensive than other drill bits, but it can drilling for a long lifetime135 point can easily drill on the metal prevent walking. High regrind, high hardness, high sharpness!

Best Cobalt Drill Bits can drill into stainless steel, iron, aluminum and other hard materials.

135 degree split point no need center punch tool, the ultimate in accuracy and performance.

High Speed Steel (HSS) Cobalt

We will tell you about why cobalt drill bit is the best for stainless steel, please click here!

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