Hertel 61698379 Screw Machine Drill Bit 25/32 in Hss

Product Description

The HERTEL 61698379 is a screw machine length drill bit designed for general-purpose metal drilling in production and maintenance environments. Manufactured from high speed steel with an oxide finish, this bit measures 25/32 inches (0.7812 inches) in diameter and features a 118-degree standard point angle optimized for drilling into steel, cast iron, aluminum, and similar materials. The shortened flute-to-diameter ratio of 3xD relative to standard jobber bits provides added rigidity and reduced deflection in drill press, turret lathe, and screw machine applications. The straight-cylindrical shank is compatible with standard drill chucks. Licensed machinists and maintenance mechanics are the primary installers.

This drill bit is suited for high-volume production drilling operations where a shorter, stiffer bit body reduces runout and breakage. The screw machine length format is common in turret lathes, CNC machining centers, and bench drill presses where workpiece clearance is limited. The right-hand spiral flute geometry promotes efficient chip evacuation during through-hole and blind-hole operations in metalworking and industrial maintenance settings. Its ANSI specification designation confirms dimensional conformance to industry standards.

Key Features

• 25/32 inch (0.7812 inch) diameter with 118-degree standard point for general-purpose metal drilling
• High speed steel construction with oxide finish for corrosion resistance and reduced friction
• Screw machine length body (3xD flute ratio) delivers greater rigidity than jobber-length bits
• Right-hand cut with regular spiral flute for effective chip removal
• Straight-cylindrical shank fits standard drill chucks without adapters
• ANSI specification designation ensures dimensional compliance

Compatibility

Designed as an OEM-style replacement or direct application drill bit for use in standard drill chucks accepting straight-cylindrical shanks; suited for screw machines, turret lathes, CNC machining centers, and bench drill presses requiring a 25/32 inch diameter screw machine length drill bit conforming to ANSI standards.

Installation Notes

Installation should be performed by qualified machinists or maintenance mechanics familiar with rotating cutting tools and machine tool safety. Ensure the machine spindle is fully stopped and power is locked out before inserting or removing the bit from the chuck. Secure the shank fully within the chuck jaws to the recommended engagement depth per machine manufacturer guidelines. Use appropriate cutting fluid or coolant for the workpiece material to extend tool life and maintain hole quality.