Cleveland C04557 Screw Machine Drill Bit 11/32 in Hss

Product Description

The CLEVELAND C04557 is a screw machine length (stub length) drill bit designed for high-volume drilling operations where rigidity and accuracy matter. Manufactured from high-speed steel (HSS) with a bright/uncoated finish, it measures 11/32 inch (0.3438 inch) in diameter with a 3-inch overall length. The 118-degree standard point angle and web-thinned tip reduce entry force and improve centering on a wide range of workpiece materials. With a right-hand spiral flute configuration and straight cylindrical shank, this bit fits standard drill chucks and is suited for production drilling in metal fabrication, mechanical assembly, and related trade applications.

The C04557 is built for general-purpose drilling in alloy steel and aluminum, making it a practical choice for HVAC installers, plumbers, electricians, and metal fabricators who need a short, stiff bit for close-clearance or fixture-mounted drilling. The abbreviated flute length of 1-11/16 inch limits deflection, which is useful when drilling through sheet metal, structural members, or equipment enclosures. The 1-5/16-inch shank length ensures secure chuck engagement. This bit conforms to ASME B94.11M standards and carries an ANSI specification designation for consistent dimensional quality.

Key Features

• High-speed steel construction for durability across alloy and aluminum workpieces
• 118-degree standard point angle with web-thinned tip for reduced thrust and improved centering
• Screw machine (stub) length at 3 inches overall reduces deflection compared to jobber-length bits
• Bright/uncoated finish suitable for general-purpose use without added coating cost
• Straight cylindrical shank fits standard 3-jaw drill chucks and CNC collets
• Meets ASME B94.11M and ANSI specification requirements for dimensional consistency

Compatibility

Designed as a general-purpose stub-length drill bit for use with standard drill chucks, drill presses, and CNC machining setups that accept a 11/32-inch straight cylindrical shank. Suitable for drilling alloy steel and aluminum workpieces.

Installation Notes

Secure the shank fully in the chuck before operation and verify the chuck is tightened to prevent slippage. Power down any drill press or CNC machine before changing bits. Use cutting fluid when drilling alloy steel to extend bit life and control heat buildup. Inspect the cutting edges before each use and replace the bit if chipping or wear is visible.