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Cobalt jobber drill bit, split point, gold TiAlN finish

Chicago-Latrobe

Chicago-Latrobe 44953 135 Degree Cobalt Jobber Drill Bit .2720

SKU CH-MDH9-J8VD2

Cobalt jobber drill bit with 135-degree split point for hard-metal drilling at .2720 inch

  • Product typeDrill Bits
  • 135-degree split point starts holes on contact
  • Cobalt construction resists heat during heavy drilling
  • TiAlN coating extends bit life in tough materials
  • Jobber length reaches standard drilling depths
  • .2720 decimal size matches letter I specification

Product Identity

This is a CHICAGO-LATROBE 44953 jobber length drill bit made from cobalt with a TiAlN coating. It features a 135 degree split point for self-centering and reduced thrust. The decimal equivalent is .2720 inches, corresponding to letter size I. It is a non-coolant through design with zero coolant holes.

Suitable Users

This bit suits machinists and technicians drilling hard metals such as stainless steel where cobalt hardness and heat resistance are required. The split point helps start holes accurately without a centre punch. Buyers needing coolant-through capability for deep-hole chip evacuation should look elsewhere. Those requiring different diameters or standard high-speed steel for softer materials will need other options.

Deciding Specification

The .2720 inch diameter determines whether this bit matches the specific hole size required for the application. The 135 degree split point geometry suits hard materials but the lack of coolant holes limits deep drilling performance. Verify the letter size I requirement before purchase.

How it compares

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

Price $9.99
Cheaper than about 88% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCHICAGO-LATROBE
Product typeDrill Bits

Questions about this item

How can I verify the 135 degree split point is cutting correctly after I start drilling?

The 135 degree split point on this Chicago-Latrobe 44953 bit is designed to self-center and reduce walking; clean, round holes in steel with minimal pressure indicate it is working as intended.

Does the box include any cutting fluid or only the .2720 inch cobalt bit itself?

The package contains the single jobber length drill bit with TiAlN coating; cutting fluid, lubricants, or additional accessories are not included and must be purchased separately.

When should I choose this .2720 inch letter size over other diameters in the same series?

Select the .2720 inch letter size when your blueprint or tap chart calls for that exact decimal equivalent; other diameters in the Chicago-Latrobe cobalt jobber line serve different hole requirements.

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