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Bright high-speed steel screw machine drill bit 15/32 in 118 degree point

Chicago-Latrobe

Chicago-Latrobe 48930 Screw Machine Drill Bit 15/32 in 118 Degrees

SKU CH-JT23-A1AQZ

A screw-machine drill bit with a 15/32 in diameter, 118-degree point angle and 0.4688 decimal equivalent

  • Product typeDrill Bits
  • Main materialHAWA
  • 15/32 in size drills precise holes for screw machine work
  • 118 degree point angle starts fast on metal and wood
  • High speed steel construction resists wear during repeated use
  • Bright uncoated finish clears chips efficiently without coolant
  • Left hand cutting direction suits reverse spindle applications

Chicago-Latrobe 48930 Drill Bit

The Chicago-Latrobe 48930 is a screw machine drill bit sized at 15/32 in with a 118-degree conventional point. It is made from High Speed Steel with a bright, uncoated finish. This left-hand cutting tool suits machinists and maintenance technicians drilling precise holes in metal.

High Speed Steel Build and Left-Hand Cutting

The HAWA High Speed Steel construction resists wear during repetitive drilling tasks. Its bright finish lacks coating, so lubrication is required to manage heat. The left-hand cutting direction helps extract broken fasteners or works with specific reverse-spindle setups. The 118-degree point centres quickly without a pilot hole.

Replaces Worn Bits for Screw Machine Work

This bit replaces dull or damaged screw machine drills of the same 15/32 in diameter and 118-degree geometry. The jump is worth it when the previous bit no longer holds tolerance or struggles with chip evacuation in high-speed steel. It restores clean cutting action for non-coolant-through applications.

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
Size & build
Main materialHAWA

Questions about this item

What shank type does the 15/32 in drill bit use and what chuck capacity does it require?

The bit has a straight round shank matching its 15/32 in diameter, so it needs a chuck that opens to at least .4688 in; most 1/2 in capacity drill chucks will accept it.

What overall length and flute length should I expect for this 48930 screw-machine bit?

Screw-machine bits are shorter than jobber drills; this 15/32 in size typically measures about 4-1/2 in overall with roughly 2-7/8 in of flute length for rigidity in tight machine setups.

How do I install the left-hand cutting drill bit in my drill press without it loosening?

Secure the bit in the chuck with the flutes facing the normal rotation direction, then run the spindle in reverse (counter-clockwise) so the left-hand helix cuts properly and the torque tightens the chuck grip.

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