Cleveland C04360 Screw Machine Drill Bit Wire 57 Hss

Product Description

The CLEVELAND C04360 is a screw machine length drill bit designed for high-volume drilling operations where a shorter, more rigid tool is required. Manufactured from high-speed steel with a bright uncoated finish, it carries a wire gauge size of 57, corresponding to a decimal diameter of 0.0430 inches. The 118-degree standard point angle suits general-purpose entry into a wide range of workpiece materials. With an overall length of 1.375 inches and a flute length of 0.500 inches, this bit fits applications where reduced overhang and increased rigidity matter most. It is installed by machinists, tool-and-die techs, and maintenance professionals working with drill presses, CNC machines, and hand-held equipment.

This bit is rated for general-purpose use in alloy steel and aluminum workpieces. The screw machine length format makes it well suited for close-tolerance work in turret lathes, screw machines, and machining centers where standard jobber-length bits would introduce unwanted deflection. The straight cylindrical shank diameter of 0.0430 inches fits collets and chucks sized for wire gauge tooling. Web thinning on the point reduces thrust requirements and improves chip clearance at the cutting edge.

Key Features

• Wire size 57 with a decimal diameter of 0.0430 inches for precise small-bore work
• High-speed steel construction provides toughness across general-purpose applications
• 118-degree standard point angle for broad material compatibility
• Screw machine length at 1.375 inches overall for improved rigidity and reduced deflection
• Web-thinned point with parallel web configuration reduces cutting thrust
• Right-hand spiral flutes with 0.500-inch flute length for effective chip evacuation
• Meets ASME B94.11M standards with a diameter tolerance of +0.0000 to -0.0005 inches

Compatibility

Designed as a general-purpose screw machine length drill bit suitable for use in drill presses, turret lathes, screw machines, and CNC machining centers accepting straight cylindrical shanks in the wire gauge size range. Primary workpiece materials include alloy steel and aluminum as specified by the manufacturer.

Installation Notes

This bit should be installed by a qualified machinist or maintenance technician familiar with small-diameter tooling. Secure the shank fully in a collet or drill chuck rated for the 0.0430-inch shank diameter before running the spindle. At this diameter, excessive feed pressure can cause bit breakage — use consistent, controlled feed rates appropriate for the workpiece material. Inspect the cutting edges before each use, as high-speed steel bits at wire gauge sizes are susceptible to tip damage if dropped or improperly stored.