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Chicago-Latrobe 44929 29/64 inch cobalt drill bit with gold TiAlN coating and split point

Chicago-Latrobe

Chicago-Latrobe 44929 29/64 in 135 Degree Cobalt Drill Bit

SKU CH-1TNW-1AFJY

A 29/64 in cobalt jobber drill bit with a 135-degree split point for hard metals

  • Product typeDrill Bits
  • Main materialHAWA
  • 29/64 inch size drills precise holes in tough materials
  • 135-degree split point starts fast without wandering on hard surfaces
  • Cobalt construction resists heat and wear during heavy use
  • TiAlN coating extends cutting life in demanding applications
  • Jobber length gives standard reach for common drilling tasks

Chicago-Latrobe 44929 Cobalt Jobber Bit

The Chicago-Latrobe 44929 is a fractional drill bit sized 29/64 inch with a decimal equivalent of .4531. It is built from cobalt HAWA material for hardness and heat resistance in metalworking. The 135 degree split point allows accurate starts without centre-punching on steel and alloy surfaces. Machinists and maintenance technicians drilling medium-diameter holes in tough metals will find it suited to daily shop use.

Thermals noise and power draw

The split-point geometry reduces thrust force, lowering friction and heat at the cutting lips during normal drilling. Cobalt substrate retains hardness at elevated temperatures, so the bit resists softening when speeds climb. No coolant-through channels are present, so external flood or mist cooling manages thermal load in heavy cuts. The TiAlN coating further cuts friction, helping the tool run cooler and quieter in hand-held or machine applications.

Bundled accessories and software

The item ships as a single drill bit with no additional accessories, cases or software included. The TiAlN coating is the only surface treatment applied, and it extends wear life without requiring separate lubricants or setup programs. Buyers needing multiple diameters or a storage index must source those separately. There is no digital component or driver to install, so the bit is ready for immediate use in any compatible chuck.

How it compares

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

Price $26.99
Typical for this category: the median of 5,493 items is $27.99.

Specifications

Product
Brand nameCHICAGO-LATROBE
Product typeDrill Bits
Size & build
Main materialHAWA

Questions about this item

How do I install the 44929 cobalt bit in my drill chuck and what step is often missed?

Open the chuck jaws wide enough for the .4531 in shank, insert the bit fully, then tighten securely; the step many miss is verifying the split point seats straight so the 135 degree angle cuts true.

What maintenance or replacement will the 44929 bit need after extended use?

The cobalt HAWA material with TiAlN coating resists wear, but the split point will dull first; plan to resharpen the 135 degree angle or replace the bit when hole quality drops.

What limit appears first when drilling continuously with the 44929 bit?

Heat buildup at the 135 degree split point is the first limit because the bit has no coolant holes; pause to let the TiAlN coating dissipate heat or use cutting fluid to extend the session.

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