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Thirteen cobalt twist drill bits in a plastic indexed case

DeWalt M35-13PCS Cobalt Drill Bit Set 13Pcs

SKU CH-BFEY-Y2E7N

13-piece M35 cobalt drill bit set with 135° split points covers 1/16 to 1/4 inch in an indexed storage case

  • Selling UnitBox
  • M35 cobalt steel with 5% cobalt resists heat and wear for longer tool life
  • 135° split point centers automatically and clears chips faster for precise drilling
  • Harder M35 alloy outperforms standard HSS 4241 for greater durability in tough materials
  • 13-piece SAE range from 1/16 to 1/4 inch covers common drilling tasks in one set
  • Indexed plastic storage case keeps bits organized and protected for quick access

M35 Cobalt 13-piece set

This DeWalt drill bit set contains 13 pieces made from M35 high-speed steel with 5 percent cobalt. The alloy resists heat, wear and chipping better than standard HSS 4241 bits. It targets mechanics and fabricators who regularly drill hardened metal, stainless steel or cast iron.

Upgrade from HSS 4241

The M35 cobalt blend outperforms HSS 4241 when cutting abrasive alloys because the added cobalt raises hot hardness. The jump is worth it when drill life drops sharply on stainless or when walking on hard surfaces ruins hole position. Standard HSS remains adequate for occasional soft-metal or wood work.

SAE range 1/16 to 1/4 inch

The kit covers 13 fractional sizes from 1/16 through 1/4 inch in jobber length, suited to common clearance and tapping holes. The 135-degree split point centres without a punch and clears chips quickly in these diameters. Larger holes or metric sizes fall outside this set.

Highlights

  • M35 cobalt steel with 5% cobalt resists heat and wear for longer tool life
  • 135° split point centers automatically and clears chips faster for precise drilling
  • Harder M35 alloy outperforms standard HSS 4241 for greater durability in tough materials
  • 13-piece SAE range from 1/16 to 1/4 inch covers common drilling tasks in one set
  • Indexed plastic storage case keeps bits organized and protected for quick access

Specifications

BrandDeWalt
Selling UnitBox
Part NumberM35-13PCS

Questions about this item

What shank size do the 1/16 to 1/4 inch bits have for my drill chuck?

Each bit in the set has a straight round shank that matches its SAE diameter, so the 1/16 inch bit fits a 1/16 inch chuck capacity and the 1/4 inch bit needs at least a 1/4 inch chuck.

Which step do users skip when starting a hole in hardened steel with the 135° split-point bits?

Many users skip a centre-punch mark; the 135° split point self-centres, but a light punch mark still prevents the bit from wandering on very hard surfaces.

When should I replace a bit from the M35 cobalt set?

Replace a bit when the cutting lips show visible rounding, the 135° point angle is no longer sharp, or the bit generates excessive heat and smoke in stainless steel or cast iron.

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