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Cleveland 5/16 inch cobalt jobber drill bit gold finish 135 degree split point

Cleveland

Cleveland 5/16" Cobalt Jobber Drill Bit C16683 135° Split Point

SKU CH-6KPJ-VJ0VQ

A 5/16 inch cobalt jobber drill bit with a 135 degree split point for accurate starts

  • Product typeDrill Accessories
  • Main materialHAWA
  • 5/16 inch cobalt construction resists heat and wear
  • 135° split point starts on contact without walking
  • TiN coating reduces friction for longer cutting life
  • Jobber length suits standard chucks and general-purpose drilling

Cobalt Jobber Drill Bit 5/16

The Cleveland C16683 is a cobalt jobber drill bit sized at 5/16 inch with a decimal equivalent of .3125. It features a 135 degree split point for accurate starting and reduced walking. The tool is made from HAWA cobalt material with a TiN coating for extended life. It suits professional mechanics and maintenance technicians drilling hard metals.

Sustained drilling in tough alloys

Cobalt construction maintains hardness at elevated temperatures generated during continuous cutting. The split point geometry reduces thrust load, lowering heat buildup over long cycles. TiN coating decreases friction and resists wear when coolant is not used. This bit is not for buyers needing coolant-through capability or larger diameter holes.

How it compares

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

Price $20.99
Cheaper than about 62% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCleveland
Product typeDrill Accessories
Size & build
Main materialHAWA

Questions about this item

How much heat does the 135° split-point cobalt bit generate during all-day drilling?

The 135° split-point geometry reduces thrust and friction, while the cobalt substrate and TiN coating dissipate heat more effectively than standard high-speed steel, keeping the bit cooler during extended use.

What shank size must my drill chuck accept to run this 5/16" jobber bit?

The bit has a straight shank matching its 5/16" (.3125) cutting diameter, so your chuck must open to at least 5/16" to hold it securely.

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