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Cobalt jobber drill bit, split point, straw bronze finish

Chicago-Latrobe

Chicago-Latrobe 46787 Cobalt 135° Jobber Drill Bit Q .3320

SKU CH-VKVX-FDZZE

A cobalt jobber drill bit with a 135-degree split point for drilling hard materials, sized at .3320 inches

  • Product typeDrill Bits
  • Main materialHAWA
  • Cobalt steel resists heat and wear for longer life
  • 135-degree split point starts on contact without wandering
  • Letter-size Q matches .3320-inch holes precisely
  • Jobber length gives standard reach for general drilling
  • Straw bronze finish identifies the cobalt construction

Chicago-Latrobe 46787 Cobalt Jobber Bit

This cobalt drill bit is built for drilling tough materials such as stainless steel and high-strength alloys. It suits machinists and maintenance technicians who need a durable, general-purpose tool for production or repair work. The Q letter size provides a precise 0.3320 inch diameter for specific clearance or tapping requirements.

135 Degree Split Point Holds Centre Under Load

The 135 degree split point reduces walking and lowers thrust force when the bit enters hard metal. Cobalt construction maintains hardness at elevated temperatures generated during sustained drilling cycles. This combination helps the bit retain sharpness and dimensional accuracy through repeated holes without frequent resharpening.

Straight Shank Fits Standard Chucks Without Adapters

The jobber length shank fits directly into any three-jaw chuck or collet sized for the 0.3320 diameter, so no special holders are required. Split-point geometry can grab aggressively in thin sheet metal, so clamping the workpiece firmly prevents the bit from pulling the material. California Proposition 65 warning applies to the cobalt content.

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 nameCHICAGO-LATROBE
Product typeDrill Bits
Size & build
Main materialHAWA

Questions about this item

Does the 135° split point on the 46787 bit reduce heat when drilling steel all day?

The 135° split point on the Chicago-Latrobe 46787 Cobalt bit is designed to start on contact and cut efficiently, which helps manage heat during extended drilling in metal.

What chuck size do I need to hold the .3320 inch shank of this jobber drill?

The .3320 inch diameter shank fits any standard drill chuck that accepts 3/8 inch or larger capacity, including keyed and keyless models.

Will this cobalt bit outlast the high-speed steel bits already in my index?

Cobalt alloy construction gives the 46787 superior hot hardness and wear resistance compared with standard high-speed steel bits, so it stays sharp longer in tough alloys.

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