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A 13 mm cobalt jobber drill bit with a straw bronze finish and 135 degree split point

Chicago-Latrobe

Chicago-Latrobe 46499 13 mm Cobalt 135° Jobber Drill Bit

SKU CH-GT5G-F91M9

13 mm cobalt jobber drill bit with 135° split point for hard-metal drilling

  • Product typeDrill Bits
  • Main materialHAWA
  • 13 mm diameter drills standard metric holes
  • 135° split point starts on contact without walking
  • Cobalt construction resists heat during high-speed drilling
  • Jobber length 151.00 mm reaches deep workpieces
  • Decimal equivalent .5118 matches imperial specifications

Chicago-Latrobe 46499 Cobalt Jobber Drill Bit

This cobalt jobber drill bit measures 13 mm in diameter with a 135-degree split point for self-centering starts. The HAWA cobalt construction resists heat and wear when drilling hard metals such as stainless steel. Its 151.00 mm overall length provides standard jobber reach for general workshop tasks. Decimal equivalent is .5118 inches.

Suited for metalworkers drilling tough alloys.

Machinists and maintenance technicians benefit from the cobalt alloy when cutting high-tensile steels or work-hardened materials. The split-point geometry reduces walking on curved surfaces. Woodworkers or plastics fabricators should choose high-speed steel or brad-point bits instead because cobalt offers no advantage in softer materials and costs more.

13 mm diameter with 135-degree cobalt split point

The 13 mm cutting diameter combined with a 135-degree cobalt split point determines whether this bit matches the required hole size and material hardness. Buyers needing a different diameter, a 118-degree point for softer metals, or coolant-through capability must select another tool. This specification is the primary filter for correct application fit.

How it compares

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

Price $17.99
Cheaper than about 68% of the 5,493 comparable items (median $27.99).

Specifications

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

Questions about this item

How can I confirm the 13 mm bit is cutting correctly after I chuck it in my drill?

A clean 135-degree split-point start with minimal wander and smooth bronze-coloured chips shows the cobalt bit is working as intended.

What comes in the package and what must I supply myself?

The box contains the single 46499 jobber-length drill bit; you provide the drill motor and any cutting fluid you prefer.

Which version should I choose — the 13 mm metric or the .5118-inch decimal equivalent?

They are the same 135-degree cobalt jobber bit; pick the 13 mm designation if you work in metric or the .5118-inch label if your plans use decimal inches.

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