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Cleveland #35 cobalt drill bit TiAlN coated 135 degree split point

Cleveland

Cleveland C15125 #35 Screw Machine Drill Bit 135° Split Point Cobalt TiAlN

SKU CH-0923-QMDHW

A #35 screw-machine drill bit with a 135° split point, cobalt construction and TiAlN coating for right-hand cutting at 0.1100 decimal equivalent

  • Product typeDrill Bits
  • #35 wire-gauge size fits precise pilot holes
  • 135° split point starts on contact without walking
  • Cobalt substrate resists heat in hard metals
  • TiAlN coating extends edge life in production runs
  • Right-hand cut matches standard drill rotation

Cleveland C15125 #35 Cobalt Drill Bit

The Cleveland C15125 is a #35 size screw machine drill bit made from cobalt with a TiAlN coating. It suits machinists and maintenance technicians who need a hard, wear-resistant bit for drilling tough alloys and stainless steels. The 135 degree split point reduces walking and starts holes cleanly without a centre punch. Right hand cutting direction matches standard drill motors and CNC spindles.

Thermals noise and power draw in normal use

Cobalt construction and the TiAlN layer dissipate cutting heat efficiently, keeping the tip stable during repeated drilling cycles. The split point geometry lowers thrust force so the motor runs cooler and draws less current per hole. No coolant through design means chips clear through the flutes without added plumbing or mist systems.

What this replaces or upgrades from

This bit replaces worn high speed steel or uncoated cobalt drills that dull quickly in abrasive materials. The jump is worth it when hole counts rise and tool changes slow production, or when work hardening demands a harder substrate and a heat resistant coating. Buyers who need coolant fed drilling or left hand rotation should select a different style.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $8.99
Cheaper than about 90% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCLEVELAND
Product typeDrill Bits

Questions about this item

How do I install the #35 cobalt drill bit with 135-degree split point in my drill chuck, and what step do people often miss?

Insert the 0.1100-inch shank fully into the chuck, tighten securely on the flats if present, and verify the bit runs true before starting — many users skip the run-out check and get oversized holes.

What maintenance or replacement will the TiAlN-coated cobalt bit need after repeated use?

The TiAlN coating on this cobalt substrate wears gradually; when the gold colour fades at the cutting edges and drilling force rises noticeably, replace the bit — resharpening removes the coating and changes the 135-degree geometry.

What limit appears first when drilling steel continuously with the 135-degree split-point geometry?

Heat buildup at the cutting lips is the first limit; the split point reduces thrust but prolonged high-speed cuts without coolant soften the cobalt edge, so use peck cycles and cutting fluid to delay it.

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