Chicago-latrobe 48522 Screw Machine Drill Bit 11/32 Hss

Product Description

The CHICAGO-LATROBE 48522 is a screw machine length drill bit designed for high-production drilling in metal fabrication and machining applications. Built from high speed steel with a bright, uncoated finish, it measures 11/32 inch (0.3438 inches) in diameter and carries a 118-degree standard point angle. The shorter screw machine length body — 3 inches overall — provides greater rigidity than jobber-length bits, reducing deflection in close-tolerance work. The parallel web configuration and web-thinned point reduce thrust requirements at entry. Right-hand spiral flute geometry evacuates chips efficiently. This bit suits machinists, tool-and-die shops, and trade professionals who need a reliable, general-purpose drill for repetitive metal drilling tasks.

The 48522 is rated for use in cast iron, non-ferrous metals, and steel. Its screw machine length profile makes it well suited for drill press work, turret lathes, and CNC drilling centers where a shorter, stiffer bit is preferred over a standard jobber-length drill. The straight cylindrical shank fits conventional drill chucks without modification. At 0.3438 inches diameter with a tolerance of +0.0000 to -0.0010 inches, it is suitable for applications requiring consistent hole sizing across production runs. Diameter falls within the 0.3000 to 0.3500 inch range of the Series 157 lineup.

Key Features

• High speed steel construction for durability across cast iron, non-ferrous metals, and steel
• 118-degree standard point angle with web-thinned, parallel web for reduced entry thrust
• Screw machine length (3 inches overall) for increased rigidity and reduced deflection
• Bright, uncoated finish — no coating to chip or flake during regrinding
• Right-hand, regular spiral flute design promotes efficient chip evacuation
• Diameter tolerance of +0.0000 to -0.0010 inches for consistent, repeatable hole sizing

Compatibility

Designed as a general-purpose OEM-style replacement or production drill for use in standard drill chucks accepting straight cylindrical shanks. Conforms to ISO standards for screw machine length drill bits in the Series 157 line.

Installation Notes

This bit is installed by machinists and trade professionals in drill presses, lathes, or CNC machining centers. Secure the straight cylindrical shank firmly in a drill chuck before operation and verify chuck key is removed before starting the machine. No coolant-through capability is present on this bit — apply cutting fluid externally when drilling steel or cast iron to extend tool life. Inspect flute condition and point geometry before each use; regrinding is appropriate when point wear is visible.