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Bright uncoated solid carbide straight-flute drill bit 15/64 inch 140 degree point

Chicago-Latrobe

Chicago-Latrobe 78599 15/64 in 140 Degree Solid Carbide Straight Flute Drill

SKU CH-V5F1-114BR

Solid carbide straight-flute drill bit with a 140-degree point angle and 15/64 inch diameter

  • 15/64 inch size fits precise fractional holes
  • 140 degree point angle centres accurately on hard materials
  • Solid carbide construction resists wear in abrasive alloys
  • Straight flute design clears chips in shallow drilling
  • Bright uncoated finish suits general-purpose machining

Chicago-Latrobe 78599 Carbide Drill

The Chicago-Latrobe 78599 is a solid carbide straight flute drill bit sized at 15/64 in with a 140 degree point angle. It suits machinists and maintenance technicians who need a rigid, wear-resistant tool for producing accurate holes in abrasive or hardened materials.

140 Degree Point and Straight Flute Limits

The 140 degree four-facet point centres the cut without a pilot hole, yet the straight flute design does not lift chips from deep cavities. Bright uncoated carbide resists wear but offers no lubricity, so cutting fluid is essential and hole depth is practically limited to the 1 5/16 in flute length.

Upgrade from High-Speed Steel Bits

This bit replaces general-purpose high-speed steel drills when tool life and hole finish matter more than initial cost. The jump is worth it for repeated runs in cast iron, non-ferrous alloys or composites where HSS dulls quickly, but it is not for handheld drilling or interrupted cuts that could fracture the carbide.

How it compares

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

Price $35.99
Pricier than about 58% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCHICAGO-LATROBE

Questions about this item

Is the 15/64 in size the only option for this drill bit?

The 15/64 in size with a .234375 decimal equivalent is the single specification listed for this 78599 model.

How does the 140 degree point angle perform in a real machine?

The 140 degree point angle with a 4 facet design helps centre the bit quickly and reduces walking when drilling into hard materials.

What does the straight flute design mean for chip removal?

Straight flutes on this solid carbide bit are suited for shallow holes and materials producing short chips, requiring frequent withdrawal to clear swarf.

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