Cleveland C70333 Screw Machine Drill Bit Wire 29 Hss

Product Description

The CLEVELAND C70333 is a screw machine length drill bit designed for high-production drilling in metal fabrication, machining, and assembly operations. Built from high-speed steel with a bright/uncoated finish, this bit features a 135-degree split point with web thinning to reduce walking and lower thrust requirements on entry. The wire gauge size 29 corresponds to a decimal diameter of 0.1360 inches. The stub-length body keeps the bit rigid and accurate in short-hole applications, making it a standard choice for machinists and production drilling setups where precision and tool life matter.

This drill bit is suited for drilling alloy steel and aluminum in both manual and CNC drilling applications. The screw machine length format reduces deflection compared to jobber-length bits, making it well-suited for close-tolerance holes in tight workspaces or multi-spindle setups. The straight cylindrical shank seats reliably in standard drill chucks and collets. It meets ASME B94.11M and NAS 907 Type C standards, confirming consistent dimensional and performance requirements for aerospace and industrial use.

Key Features

• Wire size 29 with 0.1360 inch decimal diameter and tight tolerance of +0.0000 to -0.0007 inches
• 135-degree split point with web thinning reduces thrust and eliminates center-punch requirement on most metals
• High-speed steel construction rated heavy duty for production drilling in alloy steel and aluminum
• Screw machine (stub) length at 1-15/16 inches OAL minimizes deflection and improves hole straightness
• Right-hand cut with regular spiral and two flutes for efficient chip evacuation
• Meets ASME B94.11M and NAS 907 Type C specifications

Compatibility

Designed for use in standard drill chucks and collets accepting a 0.1360 inch straight cylindrical shank. Primary workpiece materials listed are alloy steel and aluminum. Part of the Cleveland Series 2330 screw machine length drill bit line.

Installation Notes

Installation and use should be performed by machinists or qualified trades personnel familiar with rotating cutting tools. Secure the shank fully in the chuck or collet before operation and verify runout before drilling production parts. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain hole quality. Never exceed the recommended speed and feed range for the workpiece material and machine type.