Chicago-latrobe 48732 Screw Machine Drill Bit Hss

Product Description

The CHICAGO-LATROBE 48732 is a screw machine length drill bit designed for high-production drilling in metalworking and fabrication applications. Built from high speed steel with a bright uncoated finish, it measures 0.116 inches in diameter (Wire Size 32) and features a 118-degree standard point angle with a web-thinned tip for easier entry and reduced thrust. At 1-7/8 inches overall length with a 7/8-inch flute length, this short-length bit provides added rigidity and reduced deflection compared to jobber-length drills. It is well suited for use in drill presses, CNC machines, and screw machine setups where repeatability and hole accuracy are critical.

This bit is a general purpose tool from the CHICAGO-LATROBE Series 157 line, intended for drilling cast iron, non-ferrous metals, and steel in both shop and production environments. Its straight cylindrical shank fits standard drill chucks and collet holders without modification. The screw machine length format is the preferred choice for machinists and tool room technicians who need better control and rigidity in short-reach drilling operations. Diameter tolerance is held to +0.0000 to -0.0005 inches for consistent hole sizing.

Key Features

• 0.116 inches (Wire Size 32) diameter with tight tolerance of +0.0000 to -0.0005 inches
• 118-degree standard point angle with web-thinned tip for reduced entry thrust
• High speed steel construction for durability across cast iron, steel, and non-ferrous metals
• Screw machine length at 1-7/8 inches overall for maximum rigidity and minimal deflection
• Regular spiral, 2-flute design with parallel web configuration for efficient chip evacuation
• Bright uncoated finish suitable for general purpose production drilling

Compatibility

Designed as a general purpose screw machine length drill bit compatible with standard drill chucks and collet holders accepting straight cylindrical shanks. Rated for use in cast iron, non-ferrous metal, and steel workpieces per Series 157 specifications.

Installation Notes

This bit is installed by machinists, tool room technicians, and metalworking professionals using standard drill press or CNC tooling setups. Ensure the machine spindle is fully stopped and locked out before changing or seating the bit in the chuck or collet. Verify chuck or collet runout is within acceptable limits to preserve the diameter tolerance of this bit. Do not exceed the recommended feed and speed parameters for the workpiece material being drilled.