Cleveland C04537 Screw Machine Drill Bit Letter N Hss

Product Description

The CLEVELAND C04537 is a screw machine length drill bit designed for general-purpose drilling in metalworking and fabrication environments. Built from high-speed steel with a bright uncoated finish, it features a standard 118-degree split point and a straight cylindrical shank. The shorter-than-jobber overall length of 2-13/16 inches makes it well suited for tight-clearance drilling on drill presses, screw machines, and CNC turret setups. The two-flute spiral design with web thinning promotes efficient chip evacuation and reduces thrust during entry. Diameter is Letter N, equal to 0.3020 inches, with a tight tolerance of plus 0.0000 to minus 0.0010 inches. Meets ASME B94.11M standards.

This bit is intended for drilling alloy steels, aluminum, and similar materials in production and maintenance machining operations. The screw machine length profile reduces deflection and improves positional accuracy compared to standard jobber-length bits, making it a common choice for high-volume repetitive drilling on automatic and semi-automatic equipment. Machinists, tool-and-die technicians, and maintenance mechanics working on metal fabrication and machine shop applications will find this bit appropriate for their setups.

Key Features

• Letter N diameter: 0.3020 inches with tolerance of plus 0.0000 to minus 0.0010 inches
• 118-degree standard point angle for general-purpose metal entry
• Web-thinned tip reduces cutting thrust and improves chip flow
• High-speed steel construction handles moderate heat and intermittent use
• Straight cylindrical shank fits standard drill chucks and collet holders
• Short screw machine length minimizes deflection in tight-clearance applications
• Meets ASME B94.11M dimensional standards, Series 2120

Compatibility

Designed as an OEM-style general-purpose replacement or stock drill bit for use in screw machines, drill presses, CNC turret lathes, and hand-held drill setups that accept a 0.3020-inch straight cylindrical shank.

Installation Notes

Installation is performed by machinists or maintenance technicians using a standard drill chuck or collet rated for the shank diameter. Ensure the machine spindle is fully stopped and locked out before inserting or removing the bit. Secure the shank fully in the chuck to the proper depth to prevent runout. Follow applicable shop safety procedures and ANSI machine tool guarding requirements during use.