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Chicago-Latrobe 47357 11.20mm HSS drill bit black oxide finish

Chicago-Latrobe

Chicago-Latrobe 47357 11.20mm HSS drill bit 118° .4409

SKU CH-Q3DS-DBYJ6

High-speed steel jobber drill bit with 118-degree point angle, 11.20 mm diameter and .4409 decimal equivalent for general-purpose drilling

  • Product typeDrill Bits
  • Main materialHAWA
  • 20 mm metric size drills precise holes
  • 118° conventional point starts cleanly without wandering
  • .4409 decimal equivalent simplifies imperial cross-reference
  • High Speed Steel construction resists wear in steel and cast iron
  • Black Oxide finish reduces friction and corrosion

Precision drilling tool

The Chicago-Latrobe 47357 is a jobber-length drill bit manufactured from high-speed steel for general-purpose metalworking. Its 11.20 mm diameter suits fabricators, maintenance technicians and automotive mechanics who require accurate holes in ferrous and non-ferrous materials.

Black oxide surface treatment

The black oxide finish reduces friction and resists corrosion during repetitive drilling cycles. This coating helps the bit run cooler and evacuate chips more efficiently, extending usable life without the need for additional lubricants or specialised coolant systems.

Conventional 118-degree point geometry

The 118-degree conventional point centres quickly on flat surfaces and requires no pilot hole for most workshop tasks. A decimal equivalent of .4409 inch allows easy cross-reference with imperial drawings, while the straight shank fits standard three-jaw chucks on bench presses and handheld drills alike.

How it compares

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

Price $6.99
Cheaper than about 92% 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 often will the 118-degree point need resharpening when drilling steel?

Resharpen when the cutting edges dull; the 118-degree geometry can be restored on a bench grinder or drill sharpener multiple times before the bit becomes too short.

What stops the 11.20 mm HSS bit from cutting deeper in a continuous job?

Flute clogging and heat buildup limit sustained drilling; clear chips frequently and use cutting fluid to delay the limit.

Does the black-oxide 47357 bit run hotter than a coated bit during all-day use?

Black oxide holds more heat than premium coatings, so the shank warms faster; pause occasionally and apply lubricant to manage temperature.

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