Cleveland C04652 Screw Machine Drill Bit 55/64 in Hss

Product Description

The CLEVELAND C04652 is a screw machine length drill bit designed for high-volume drilling applications in metal fabrication, machining, and general-purpose shop work. Built from high-speed steel with a bright, uncoated finish, it features a 118-degree standard point angle and a web-thinned tip to reduce thrust and improve centering on entry. The bit measures 55/64 inch (0.8594 inch) in diameter with an overall length of 5.5 inches and a flute length of 3.5 inches. Its shorter-than-jobber body makes it well suited for use in turret lathes, screw machines, and CNC drilling applications where rigidity and reduced deflection are critical.

This bit is intended for right-hand cutting in a straight-cylindrical shank setup, making it compatible with standard drill chucks and collet systems. It targets alloy steel and aluminum as primary workpiece materials and performs reliably in general-purpose production environments. The Series 2120 designation follows ASME B94.11M standards and ANSI specifications, confirming dimensional consistency across the lot. Machinists and tool-and-die professionals working in short-run and production environments will find this size and geometry straightforward to source and replace.

Key Features

• 55/64 inch (0.8594 inch) diameter with a tolerance of +0.0000 to -0.0012 inch for consistent hole sizing
• 118-degree standard point angle with web-thinned tip reduces entry thrust and improves bit stability
• High-speed steel construction handles alloy steel and aluminum at standard machining speeds
• Screw machine (short) length at 5.5 inches OAL provides added rigidity versus jobber-length bits
• Bright, uncoated finish suitable for use with cutting fluid or dry in compatible materials
• Regular spiral, two-flute geometry for efficient chip evacuation in through-hole and blind-hole drilling

Compatibility

Designed as an OEM-style replacement or direct tooling selection for screw machines, turret lathes, and CNC drill stations requiring a 55/64 inch screw machine length bit with a straight-cylindrical shank and 118-degree point. Primary workpiece materials listed are alloy steel and aluminum.

Installation Notes

Installation and use of this bit should be performed by a qualified machinist or toolroom technician. Secure the straight-cylindrical shank firmly in the drill chuck or collet to the manufacturer-specified engagement depth before operation. Power down and lock out the machine spindle before changing or inspecting tooling. Apply appropriate cutting fluid for alloy steel applications to extend tool life and maintain hole tolerance.