Cleveland C04542 Screw Machine Drill Bit 5/16 in Hss

Product Description

The CLEVELAND C04542 is a screw machine length drill bit designed for general-purpose drilling in metal fabrication, maintenance, and production environments. Built from high-speed steel with a bright uncoated finish, this bit measures 5/16 inches in diameter with an overall length of 2-13/16 inches. The 118-degree standard point angle provides reliable starting and clean entry across a range of workpiece materials. The short flute length and rigid construction make this bit well suited for use in drill presses, screw machines, and CNC equipment where reduced deflection and tight tolerances are required. Web thinning reduces thrust and improves chip flow during cutting.

This drill bit is intended for right-hand cutting in alloy steel, aluminum, and similar materials. The screw machine length format — shorter than a jobber bit — gives machinists and maintenance technicians better rigidity in close-quarter or high-speed applications. It fits standard 5/16-inch chucks and collets with a straight cylindrical shank. Typical users include machinists, tool and die workers, and industrial maintenance mechanics working in manufacturing and fabrication settings.

Key Features

• 5/16-inch diameter with a diameter tolerance of +0.0000 to -0.0010 inches for precise fit
• 118-degree standard point angle for general-purpose entry in metal and alloy workpieces
• High-speed steel construction for durability across repeated use cycles
• Web-thinned parallel web design reduces cutting thrust and improves chip evacuation
• Short overall length of 2-13/16 inches provides added rigidity versus jobber-length bits
• Meets ASME B94.11M standards for drill bit geometry and tolerances

Compatibility

Designed as an OEM-style general-purpose replacement drill bit for use in screw machines, drill presses, and CNC equipment accepting a straight cylindrical shank in 5/16-inch diameter. Suitable for drilling alloy steel and aluminum as stated by the manufacturer.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance mechanics familiar with rotating cutting tools. Ensure the machine spindle is fully stopped and locked out before changing or inspecting the bit. Secure the shank fully in the chuck or collet to the manufacturer-specified engagement depth to prevent slippage. Follow applicable shop safety codes and machine manufacturer guidelines when selecting feeds and speeds for the workpiece material.