Cleveland C04641 Screw Machine Drill Bit 49/64 in Hss

Product Description

The CLEVELAND C04641 is a screw machine length drill bit designed for high-throughput drilling in metalworking and general fabrication environments. Built from high-speed steel with a bright uncoated finish, it features a 49/64 inch (0.7656 inch) diameter, a standard 118-degree split point, and a straight-cylindrical shank. The shortened overall length of 5-1/8 inches makes it well-suited for close-quarters drilling where a jobber-length bit would be impractical. This bit is manufactured to ASME B94.11M standards and is installed by machinists, tool-and-die professionals, and maintenance technicians working on drilling machines, drill presses, and CNC operations.

This bit is intended for general-purpose drilling in alloy steel and aluminum workpieces. The screw machine length profile provides increased rigidity compared to standard jobber-length bits, reducing deflection and improving hole accuracy in production environments. It is a practical choice for machine shops, maintenance departments, and industrial facilities where consistent, repeatable drilling performance is required across a range of ferrous and non-ferrous materials.

Key Features

• 49/64 inch (0.7656 inch) diameter with a tight tolerance of +0.0000 to -0.0012 inches
• High-speed steel construction for durability in general-purpose metal drilling
• 118-degree standard point angle with web-thinned geometry for reduced thrust and easier starting
• Screw machine (stub) length at 5-1/8 inches OAL for improved rigidity in tight setups
• Right-hand cut with 2-flute spiral configuration and 3-1/4 inch flute length
• Straight-cylindrical shank at 0.7656 inch diameter with 1-7/8 inch shank length
• Meets ASME B94.11M standards for dimensional accuracy and performance

Compatibility

Designed as an OEM-style replacement or direct selection for screw machine length drill applications in standard drill chucks and collet holders accepting a 49/64 inch straight-cylindrical shank, per ASME B94.11M and ANSI specification designations.

Installation Notes

This bit is installed and serviced by machinists and toolroom technicians using drill presses, turret lathes, screw machines, or CNC drilling equipment. Ensure the drill chuck or collet is fully tightened and that the workpiece is firmly secured before initiating the cut. Inspect the cutting edges for wear or chipping before each use, and replace when the bit no longer produces clean entry holes or shows excessive heat discoloration. Follow applicable OSHA machine guarding requirements when operating drilling equipment.