Hertel 89321764 Screw Machine Drill Bit 39/64 in Hss

Product Description

The HERTEL 89321764 is a screw machine length drill bit designed for general-purpose drilling in metal, plastic, and similar materials. It measures 39/64 inches (0.6094 inches decimal) in diameter and features a 118-degree split-point angle, which is the standard geometry for versatile, everyday drilling applications. The bit is manufactured from high-speed steel (HSS) with a bright, uncoated finish and cuts in a right-hand direction. The shortened screw machine length profile provides added rigidity compared to jobber-length bits, making it well suited for use in drill presses, CNC turrets, and screw machines where reduced deflection matters.

This bit is used in machine shop, maintenance, and light fabrication environments. The screw machine length format is a common choice when drilling in confined setups or when the workpiece requires a more rigid cutting tool. It is appropriate for drilling ferrous and non-ferrous metals, thermoplastics, and composite materials. Machinists, tool and die workers, and general maintenance technicians working in industrial or shop settings are the typical end users of this bit style.

Key Features

• 39/64 inch diameter (0.6094 inches decimal) for precise sizing
• 118-degree drill point angle — standard geometry for general-purpose use
• High-speed steel construction provides durability across common workpiece materials
• Bright, uncoated finish suitable for general purpose drilling applications
• Screw machine length body adds rigidity and reduces deflection versus jobber-length bits
• Right-hand cut direction compatible with standard drill press and CNC spindle rotation

Compatibility

Designed as a general-purpose screw machine length drill bit compatible with standard drill press chucks, CNC turret setups, and screw machine tool holders that accept 39/64 inch shank diameters.

Installation Notes

This bit is installed and operated by machinists or maintenance technicians using standard drill press or machine tool setups. Secure the shank firmly in the chuck or tool holder before operation and verify the spindle is at a full stop before making any adjustments. Select an appropriate cutting speed and feed rate for the workpiece material to avoid premature wear. Always use appropriate eye protection and follow applicable shop safety procedures when operating drilling equipment.