Hertel 89321962 Screw Machine Drill Bit 51/64 in Hss

Product Description

The HERTEL 89321962 is a screw machine length drill bit designed for high-speed steel cutting applications in metal fabrication, machining, and general-purpose drilling. At 51/64 inch (0.7969 inch) in diameter with a 118-degree split-free point angle, this bit delivers clean entry and controlled chip removal. The bright, uncoated finish is suitable for use in a wide range of materials where specialized coatings are not required. With an overall length of 5.25 inches and a flute length of 3.375 inches, the shorter-than-standard stub length improves rigidity and reduces deflection during drilling operations on lathes, drill presses, and machining centers.

This drill bit is intended for general-purpose production drilling environments, including job shops, maintenance facilities, and manufacturing operations. The right-hand cutting direction is standard for use with conventional drill presses and CNC machining centers. It is well suited for applications involving materials in the 0.6000 inch and larger diameter size range where a rigid, shorter flute geometry is preferred over jobber-length bits. Machinists, tool-and-die makers, and maintenance mechanics are the typical end users for this style of bit.

Key Features

• 51/64 inch diameter (0.7969 inch decimal equivalent) for precise sizing
• 118-degree point angle for general-purpose drilling in a broad range of materials
• Screw machine (stub) length body improves rigidity and reduces chatter
• High-speed steel construction provides durability across standard machining applications
• Bright, uncoated finish for use without specialty coating requirements
• Right-hand cut compatible with standard drill presses and machining centers

Compatibility

Designed as a general-purpose screw machine length drill bit suitable for use in standard drill chucks, drill presses, CNC machining centers, and lathes accepting 51/64 inch shank tooling.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance mechanics familiar with rotating cutting tools. Ensure the drill chuck is fully tightened and the workpiece is properly secured before operation. Always wear appropriate eye protection and follow applicable OSHA machine guarding requirements when operating drill presses or machining centers. Inspect the cutting edges for wear or damage before each use and replace the bit if the point shows signs of chipping or excessive dulling.