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Cobalt jobber drill bit, straw bronze finish, split point, 135 degree angle

Chicago-Latrobe

Chicago-Latrobe 47707 135 Degree Cobalt Jobber Drill Bit

SKU CH-ZCCT-XY3BA

A 7/64 inch cobalt jobber drill bit with a 135 degree split point for heavy-duty drilling

  • Product typeDrill Bits
  • Main materialHAWA
  • 135° split point starts on contact without wandering
  • Cobalt steel resists heat for longer cutting life
  • Jobber length reaches deeper holes in one pass
  • 7/64 in fractional size fits standard chucks
  • Heavy-duty construction handles tough materials daily

Chicago-Latrobe 47707 Cobalt Drill Bit

The Chicago-Latrobe 47707 is a jobber length drill bit manufactured from HAWA cobalt material. It features a 135 degree split point designed for self-centering and reduced walking on hard surfaces. The fractional size is 7/64 inch with a decimal equivalent of .1094. A straw bronze finish identifies the cobalt construction.

Suited for drilling hard metals and alloys

This bit suits machinists and maintenance crews drilling stainless steel, titanium and other tough alloys where high heat resistance matters. The split point geometry helps start holes accurately without a centre punch. Builders who need coolant-through capability or carbide tipped tooling for abrasive non-metallics should look at something else.

Straw bronze finish signals material grade

The surface colour indicates the cobalt alloy heat treatment rather than a separate coating. No coolant holes are present so the user must supply external lubrication or peck drilling cycles. The jobber length flute provides standard reach for general purpose machine or handheld drilling. No additional accessories or software are bundled with the bit.

How it compares

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

Price $1.90
Cheaper than about 98% 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

What chuck size is needed to hold the 7/64 inch shank?

Any standard drill chuck that accepts 7/64 inch or 0.1094 inch round shanks will hold this bit securely.

Can this cobalt bit replace a high-speed steel bit in my existing drill press?

Yes, the 135-degree split point works in the same drill press; cobalt simply resists heat better during prolonged drilling.

How do I confirm the split point is cutting correctly after the first hole?

A clean, centred hole with minimal wandering and a straw-bronze finish on the bit indicates proper engagement.

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