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Chicago-Latrobe 53451 cobalt drill bit 51/64 inch 118 degree point straw bronze finish half inch reduced shank

Chicago-Latrobe

Chicago-Latrobe 53451 118° 51/64" Cobalt Drill Bit 1/2" Shank

SKU CH-JJ8D-D87WY

51/64 inch cobalt drill bit with 118-degree point and 1/2 inch reduced shank for large-hole drilling

  • Product typeDrill Bits
  • Cobalt construction resists heat during heavy drilling
  • 118° point angle centres quickly on contact
  • 51/64" diameter creates large precise holes
  • 1/2" reduced shank fits standard chucks
  • Straw bronze finish adds wear resistance

Chicago-Latrobe 53451 Cobalt Drill Bit

This Chicago-Latrobe 53451 drill bit is a reduced-shank cutting tool made from machining cobalt with a straw-bronze finish. It features a 118-degree point angle and a 1/2-inch shank designed for use in larger drill chucks. The bit is supplied new for professional and industrial drilling tasks.

Suited for machinists drilling 51/64-inch holes

This bit suits machinists and maintenance technicians who need a cobalt tool for drilling 51/64-inch diameter holes in tough materials. The reduced shank allows compatibility with 1/2-inch capacity chucks. It is not for buyers who require a different drill diameter or a standard shank size matching the flute.

51/64-inch drill diameter

The decisive specification is the 51/64-inch cutting diameter combined with a 1/2-inch reduced shank. This specific geometry determines whether the bit fits your chuck and produces the required hole size. Verify both measurements against your application requirements before purchase.

How it compares

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

Price $53.99
Pricier than about 69% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCHICAGO-LATROBE
Product typeDrill Bits

Questions about this item

When will the 51/64" cobalt drill bit need resharpening or replacement?

Resharpen the 118° point when cutting slows or heat builds; replace the bit if the reduced 1/2" shank shows wear or the cobalt edge chips.

What stops a long drilling run first on this 51/64" cobalt bit?

Heat buildup at the 118° point usually limits continuous drilling before the cobalt material itself fails.

How hot or loud does the 51/64" bit get during all-day drilling?

The straw/bronze finish shows typical cobalt heat colours; noise comes from the drill motor, not the 53451 bit itself.

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