Chicago-latrobe 48910 Screw Machine Drill Bit 5/32 Hss

Product Description

The CHICAGO-LATROBE 48910 is a screw machine length drill bit designed for general-purpose drilling in a wide range of materials. Built from high-speed steel (HSS) with a bright/uncoated finish, this bit measures 5/32 inch (0.1562 inch) in diameter and features a left-hand cutting direction, which makes it well suited for extraction applications and reverse-direction machining setups. The 118-degree standard point angle and web-thinned parallel web reduce entry resistance and improve centering. Overall length is 2-1/16 inches, keeping the bit rigid and minimizing deflection in short-reach drilling operations. Machinists, maintenance technicians, and metalworking trades install this type of bit using standard drill presses, hand drills, and CNC equipment.

The 48910 is appropriate for use in residential and commercial maintenance, light manufacturing, and repair operations. Its screw machine length profile makes it a practical choice where a shorter, stiffer bit is preferred over a jobber-length drill. Primary workpiece materials include aluminum, copper, magnesium, slate, thermoplastic, and wood. The straight shank fits standard drill chucks without adapters, and the regular spiral flute design handles chip evacuation effectively across these material types.

Key Features

• Left-hand cut direction for use in reverse-rotation extraction and standard reverse-direction drilling
• HSS construction rated for general-purpose use across non-ferrous metals, plastics, and wood
• 118-degree standard point angle with web-thinned geometry for improved centering and reduced thrust
• Screw machine length (2-1/16 inches OAL) provides greater rigidity than jobber-length alternatives
• Bright/uncoated finish suitable for dry cutting and light lubricated applications
• Straight shank fits directly into standard drill chucks without a collet adapter

Compatibility

Designed as an OEM-style general-purpose replacement or stock drill bit compatible with any standard drill chuck accepting a straight shank in the 5/32 inch diameter range.

Installation Notes

This bit is installed and removed by a licensed machinist or maintenance technician using a standard keyed or keyless drill chuck. Ensure the drill or press is powered off and the chuck is fully tightened before operation. Use appropriate cutting fluid or coolant for metal workpieces to extend bit life. Follow applicable workplace safety standards for rotating cutting tools during all drilling operations.