ABRACS HSS-Co Cobalt M35 Drill Bit - 6mm - DAC6

The ABRACS HSS-Co Cobalt M35 Drill Bit is designed for high-performance drilling, featuring a 5% c...

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eBayABRACS Hss-Co Cobalt (M35) Drill Bit 6mm - DAC6
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B&QB&Q - Hss-Co Cobalt (M35) Drill Bit 6.0mm Pack Of 10 Abracs
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Product Information

Full details

The ABRACS HSS-Co Cobalt M35 Drill Bit is a premium choice for metalworkers and professional contractors who require high-performance drilling in tough materials. Featuring a 5% cobalt alloy, these bits provide superior heat resistance and longevity compared to standard HSS bits. While they offer exceptional precision, they are brittle and should be used with steady pressure to avoid snapping during high-torque applications.

All features

Model Part NumberDAC6
BrandMehr

Extended Product Information

FAQs

Can I use these for wood?

While they will work, they are optimized for metal. Standard HSS bits are usually more cost-effective for wood.

Do I need a pilot hole?

Thanks to the split-point design, a pilot hole is often not required, but it is recommended for holes larger than 6mm.

What is the primary material advantage of M35 cobalt?

M35 cobalt steel is significantly more resistant to heat, which is the main cause of drill bit failure in metalworking.

Are these bits compatible with standard hand drills?

Yes, they fit all standard drill chucks that accept a 6mm shank.

How many bits are in a pack?

This pack contains 10 individual 6.0mm drill bits.

Troubleshooting

Bit is dulling prematurely

Reduce your drilling RPM. High heat caused by excessive speed will soften the tip of any drill bit.

Bit snaps during operation

Ensure the workpiece is perfectly stable and that the drill is held at a 90-degree angle. Do not apply side pressure.

Bit will not bite into the surface

The material may have become work-hardened. Apply more pressure to ensure the cutting edge is consistently removing metal.

Pros and Cons

Pros

  • Superior heat resistance due to M35 cobalt content
  • Split point design eliminates the need for a center punch
  • Extended service life when drilling abrasive or hard metals
  • High-speed drilling efficiency reduces labor time

Cons

  • More brittle than standard HSS, prone to snapping under side-loading
  • Requires careful speed control to prevent premature dulling
  • Not intended for masonry or concrete applications

Setup, Compatibility & Care

To maximize the life of your DAC6 bits, ensure your drill chuck is properly tightened and the material is securely clamped. Avoid lateral pressure, as the hardened cobalt steel is brittle and can fracture if the drill is tilted mid-cut.

Best Practices:

  1. Use a cutting fluid or lubricant to dissipate heat during deep-hole drilling.
  2. Store bits in a dry place to prevent surface oxidation.
  3. Run at lower RPMs for harder materials to keep the bit cool.
  4. When the bit begins to struggle, re-sharpen on a specialized grinder rather than attempting to 'force' the cut.

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