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Black oxide high-speed steel jobber drill bit with split point, half inch size

Chicago-Latrobe

Chicago-Latrobe 57232 118 Degree Split Point Jobber Drill 1/2 in

SKU CH-BYSD-6SPKK

A 1/2 inch high-speed steel jobber drill bit with a 118-degree split point for accurate starting and black oxide finish

  • Product typeDrill Bits
  • Main materialHAWA
  • 118-degree split point starts cleanly without wandering
  • 1/2 inch fractional size matches standard chuck capacities
  • High-speed steel body resists heat during extended drilling
  • Black oxide finish reduces friction and chip welding
  • Jobber length provides versatile reach for general-purpose work

Chicago-Latrobe 57232 jobber drill

The Chicago-Latrobe 57232 is a jobber-length drill bit made from high-speed steel with a black oxide finish. It is designed for general-purpose drilling in metal, wood and plastic. The 1/2 inch fractional size suits maintenance, fabrication and automotive tasks. Buyers who need a smaller diameter or a different point geometry should choose another bit.

118 degree split point reduces thrust

The 118-degree split point centres the bit without a centre punch and lowers the force required to start the cut. Black oxide coating helps retain lubricity and resist corrosion during normal use. The non-coolant-through design means chips clear through the flutes without internal passages. No coolant holes are present on this tool.

Consistent performance in sustained drilling

Under continuous drilling the high-speed steel body maintains hardness at elevated temperatures. The split point geometry continues to self-centre as the cutting lips wear. Black oxide surface treatment reduces galling during extended cuts. The tool has no internal coolant delivery for deep-hole applications.

How it compares

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

Price $8.99
Cheaper than about 90% 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

How is the 1/2 inch split-point jobber drill installed in a drill chuck, and what step do people often get wrong?

Open the chuck fully, insert the bit shank straight until it seats, then tighten securely; the common error is not centering the shank, which causes run-out.

What maintenance or replacement will the high-speed steel 118-degree split-point bit need later?

Resharpen the split point when cutting edges dull; replace the bit if the flutes wear down or the shank becomes damaged.

What limit appears first during sustained drilling with this black-oxide jobber bit?

Heat buildup in the high-speed steel causes loss of hardness and cutting efficiency before the black-oxide coating wears away.

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