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Chicago-Latrobe 55123 screw-machine drill bit 31/64 inch 118° point high-speed steel TiN coated

Chicago-Latrobe

Chicago-Latrobe 55123 Screw Machine Drill Bit 31/64 in 118°

SKU CH-WQ94-10DN4

High-speed steel screw-machine drill bit, 31/64 in with 118° point for right-hand cutting

  • Product typeDrill Bits
  • Main materialHAWA
  • Precise 31/64 in drilling with 118° point angle
  • High-speed steel construction resists wear during heavy use
  • TiN coating reduces friction and extends cutting life
  • Right-hand cutting direction suits standard drill chucks
  • Decimal equivalent .4844 ensures exact hole sizing

Chicago-Latrobe 55123 Screw Machine Drill Bit

The Chicago-Latrobe 55123 is a screw machine drill bit built for precision drilling tasks. It features a 31/64 in diameter and a 118 degree point angle. The bit is constructed from high speed steel with a TiN coating. It is designed for right hand cutting direction.

Suited for general machine drilling in metal

This bit suits machinists and maintenance crews drilling standard metal workpieces on screw machines or drill presses. The 118 degree conventional point centers well without a pilot hole. Buyers who need coolant-through capability or a different point geometry should look at other options. Left hand cutting applications are not supported.

31/64 in diameter with 118 degree point

The 31/64 in size provides a decimal equivalent of .4844 in for exact hole sizing. This specific diameter and point angle combination determines fit for reaming, tapping or clearance holes. Verify the required decimal size and point angle against your print before ordering. The high speed steel substrate handles typical ferrous materials.

How it compares

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

Price $16.99
Cheaper than about 70% 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 do I install the 55123 drill bit and what step do users often miss?

Chuck the 31/64 in shank tightly in a right-hand rotation drill; the step many miss is confirming the chuck jaws grip the full shank length before starting the hole.

What maintenance or replacement will the 55123 bit need over time?

The high-speed steel cutting lips with TiN coating will dull; resharpen the 118° conventional point or replace the bit when hole quality drops.

What limit appears first on the 55123 bit during sustained drilling?

Heat buildup at the 118° point softens the high-speed steel faster than the TiN coating wears, so cutting speed must drop to protect the edge.

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