Cleveland C70328 Screw Machine Drill Bit Wire 24 Hss

Product Description

The CLEVELAND C70328 is a screw machine length drill bit in wire gauge size 24, with a decimal diameter of 0.1520 inches. Built from high-speed steel (HSS) with a bright uncoated finish, this bit features a 135-degree split point and web-thinned geometry that reduces thrust on entry and improves centering without a pilot hole. The two-flute, right-hand spiral design clears chips efficiently in short-hole applications. At 2-1/16 inches overall length, the stub-length profile suits drilling in tight clearances where a jobber-length bit would not fit. Licensed machinists, tool-and-die shops, and maintenance techs working in production environments are the primary users.

This bit is rated for use in alloy steel and aluminum workpieces, making it a versatile choice in general metalworking, aerospace maintenance, and industrial production drilling. The screw machine length format is standard on CNC machining centers, drill presses, and hand-held power tools where a stiff, short cutting column is preferred over a longer jobber bit. The parallel web configuration and web-thinned point reduce walking and chatter at the start of the cut, which matters when drilling to close tolerances in production runs.

Key Features

• Wire size 24 (0.1520 inches) with diameter tolerance of +0.0000 to -0.0007 inches for close-tolerance drilling
• 135-degree split point with web thinning reduces entry thrust and eliminates the need for a center punch on most metals
• High-speed steel construction handles alloy steel and aluminum at production feed rates
• Screw machine (stub) length of 2-1/16 inches overall provides rigidity and suits restricted-clearance setups
• Right-hand cut, straight-cylindrical shank fits standard drill chucks without adapters
• Meets ASME B94.11M and NAS 907 Type C specifications for dimensional and performance compliance

Compatibility

Designed for use in standard drill chucks accepting a 0.1520-inch straight-cylindrical shank. Primary workpiece materials are alloy steel and aluminum as stated by the manufacturer. Series 2330 screw machine length format is compatible with CNC machining centers, bench drill presses, and hand-held power tools.

Installation Notes

Installation is performed by machinists and maintenance technicians using standard drill chucks or collet holders. Secure the shank fully in the chuck before operation and verify runout is within acceptable limits for the application tolerance. Always wear appropriate eye protection and secure the workpiece before drilling. Do not exceed the recommended feed and speed parameters for the workpiece material to avoid premature edge wear or breakage.