Cleveland C04394 Screw Machine Drill Bit Wire 46 Hss

Product Description

The CLEVELAND C04394 is a screw machine length (stub length) drill bit designed for high-volume, short-reach drilling applications in metal fabrication and machining environments. Built from high-speed steel (HSS) with a bright/uncoated finish, this bit carries a wire gauge size of 46, equal to 0.0810 inches in diameter. The 118-degree standard point angle and web-thinned tip geometry reduce thrust and improve chip evacuation on entry. At 1.75 inches overall length, this stub-length format delivers added rigidity over jobber-length bits, making it well suited for use in screw machines, turret lathes, CNC machining centers, and drill presses where runout control and chatter resistance matter. Two spiral flutes with a regular helix handle chip clearing in a right-hand cut direction.

This bit is rated for general-purpose drilling in alloy steels and aluminum and meets ASME B94.11M standards. The straight-cylindrical shank at 0.0810 inches diameter fits standard drill chucks and collet holders without adapter sleeves. The short flute length of 0.75 inches and 1-inch shank length are sized specifically for screw machine setups where minimal tool extension reduces deflection. Machinists, tool-and-die techs, and production floor operators working in job shops, production machining cells, and light manufacturing will find this bit fits recurring small-diameter drilling workflows.

Key Features

• Wire size 46 diameter: 0.0810 inches, with a tight tolerance of +0.0000 to -0.0005 inches
• 118-degree standard point angle with web-thinned tip for reduced entry thrust
• High-speed steel construction, bright/uncoated finish for general-purpose use
• Screw machine (stub) length at 1.75 inches OAL for maximum rigidity and minimal deflection
• Right-hand cut, two spiral flutes, regular helix for efficient chip removal
• Meets ASME B94.11M dimensional standard for screw machine length drill bits

Compatibility

Designed as an OEM-style general-purpose screw machine length drill bit suited for use in screw machines, turret lathes, CNC machining centers, and drill presses. Rated for primary workpiece materials including alloy steels and aluminum per Series 2120 specifications.

Installation Notes

Install in a properly sized drill chuck or collet that matches the 0.0810-inch straight-cylindrical shank diameter, ensuring full shank engagement to minimize runout. Secure the workpiece firmly before drilling; unsupported stock at small diameters is a common cause of bit breakage. Follow machine manufacturer speed and feed guidelines for HSS tooling in the target material. Inspect the drill point for wear or chipping before each use, as small-diameter bits at this size range are sensitive to regrinding tolerances.