Chicago-latrobe 48750 Screw Machine Drill Bit 50 Hss

Product Description

The CHICAGO-LATROBE 48750 is a screw machine length drill bit designed for high-volume drilling in metal fabrication, machining, and maintenance applications. Built from high speed steel with a bright uncoated finish, this bit features a standard 118-degree point angle and a right-hand spiral flute for efficient chip evacuation. The straight-cylindrical shank seats securely in standard drill chucks. At wire gauge size 50, the decimal diameter is 0.0700 inches, with a diameter tolerance held to +0.0000 to -0.0005 inches for consistent hole quality. Machinists, maintenance technicians, and production drillers rely on this series for general-purpose work across a range of common materials.

The 48750 is suited for drilling cast iron, non-ferrous metals, and steel in production and job-shop environments. The screw machine length configuration, shorter than a jobber bit, provides added rigidity and reduced deflection when drilling in drill presses, CNC turret machines, and screw machines. The Series 157 design includes web thinning for reduced thrust requirements at entry, making it practical for close-tolerance work on light to medium-duty setups.

Key Features

• Wire size 50, 0.0700-inch decimal diameter with tight tolerance of +0.0000 to -0.0005 inches
• High speed steel construction for general-purpose performance on steel, cast iron, and non-ferrous metals
• 118-degree standard point angle for broad material compatibility
• Web-thinned parallel web reduces entry thrust and improves centering
• Screw machine length body adds rigidity and minimizes deflection versus jobber-length bits
• Bright uncoated finish, right-hand cut, 2-flute spiral configuration

Compatibility

Designed as a general-purpose screw machine length drill bit compatible with standard straight-shank drill chucks used in drill presses, CNC turret lathes, and screw machines where wire size 50 tooling is specified.

Installation Notes

Install in a compatible straight-shank drill chuck and confirm the shank is fully seated before operation. Secure the workpiece firmly to prevent movement during drilling. Use appropriate cutting fluid when drilling steel or cast iron to extend tool life and maintain hole tolerance. Inspect the cutting edges before each use and replace the bit if chipping or dulling is evident.