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Short cobalt steel drill bit with straw finish and 135-degree split point

Chicago-Latrobe

Chicago-Latrobe 50805 Screw Machine Drill Bit 1/8 in 135 Degrees Cobalt Steel

SKU CH-5C6C-JQ35S

A 1/8 inch cobalt steel drill bit with a 135-degree split point for precise screw machine work

  • Product typeDrill Bits
  • Main materialCobalt Steel
  • 135-degree split point starts on contact for accurate holes
  • Cobalt steel resists heat and wear in tough metals
  • 1/8 in size with .1250 decimal equivalent fits precise jobs
  • Right-hand cutting direction suits standard drill operation
  • Straw finish identifies cobalt construction at a glance

Chicago-Latrobe 50805 Drill Bit

The Chicago-Latrobe 50805 is a screw machine drill bit made from cobalt steel for drilling hard metals. Its 135-degree split point reduces walking and starts the cut cleanly. The straw finish identifies the cobalt alloy and resists corrosion. It is built for machine use where precision and tool life matter.

Suits CNC and manual drilling; not for softwoods

Machinists and maintenance technicians drilling stainless steel, titanium or high-strength alloys will benefit from the cobalt substrate and split-point geometry. The right-hand cutting direction matches standard collets and chucks. Buyers needing a bit for wood, plastic or non-ferrous sheet should choose a different geometry.

1/8 inch size with 135-degree split point

The drill bit diameter is 1/8 inch, decimal equivalent .1250, which determines the hole size produced. The 135-degree point angle and split point control chip formation and centring accuracy in tough materials. Select this bit only when the required hole matches that exact diameter.

How it compares

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

Price $1.99
Cheaper than about 98% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCHICAGO-LATROBE
Product typeDrill Bits
Size & build
Main materialCobalt Steel

Questions about this item

What chuck size accepts the 1/8 in shank on the 50805 drill bit?

A standard 3/8 in or 1/2 in drill chuck will grip the 1/8 in shank; tighten fully so the split point runs true.

How do I start a hole with the 135 degree split point without walking?

Place the tip on the mark, apply steady pressure, and let the split point centre itself — no centre punch needed.

When should I replace this cobalt steel bit?

Replace it when the cutting edges no longer produce clean chips or the straw-coloured finish has worn to bare steel.

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