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Silver cylindrical twist drill bit with gold tip, 1/2 inch diameter, 118-degree point angle

Chicago-Latrobe

Chicago-Latrobe 55124 Screw Machine Drill Bit 1/2 in 118 Degrees

SKU CH-9NM3-97FH9

High-speed steel screw-machine drill bit with 118-degree conventional point for right-hand cutting

  • Product typeDrill Bits
  • 1/2 in drill bit handles large-hole tasks
  • 118-degree conventional point starts accurately on metal
  • High-speed steel body resists wear in production use
  • TiN coating reduces friction and extends cutting life
  • Right-hand cut suits standard drill motors

Chicago-Latrobe 55124 Drill Bit

This Chicago-Latrobe 55124 is a screw machine drill bit designed for general-purpose drilling in metal and other materials. It suits machinists, maintenance technicians and hobbyists who need a reliable 1/2 inch cutting tool for workshop tasks. The right-hand cutting direction matches standard drill press and handheld drill operation. Buyers who need a different point angle or a left-hand cutting bit should look elsewhere.

High-Speed Steel Construction

The bit is manufactured from high-speed steel with a TiN coating to resist wear and heat during extended use. Its conventional 118 degree point angle centres easily on flat surfaces without a pilot hole. The non-coolant-through design means chips must be cleared manually or with external coolant in deep holes. The shank fits standard 1/2 inch chucks for secure clamping.

Ready-to-Use Cutting Tool

No additional accessories or software are bundled with this drill bit; it arrives as a single cutting tool ready for immediate installation. The TiN coating extends service life compared with uncoated high-speed steel, reducing the frequency of bit changes. Users should match cutting speeds and feeds to the workpiece material for best results.

How it compares

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

Price $18.99
Cheaper than about 66% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCHICAGO-LATROBE
Product typeDrill Bits

Questions about this item

What does the 118-degree point angle mean for drilling performance?

The 118-degree conventional point provides a standard cutting geometry suitable for general-purpose drilling in metal and other materials.

What shank style does the 1/2-inch drill bit use for mounting?

The bit features a straight shank that fits standard three-jaw chucks on drill presses and handheld drills.

How should the TiN-coated high-speed steel bit be installed to avoid runout?

Insert the shank fully into the chuck and tighten all three jaws evenly so the bit runs true before starting the cut.

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