Hertel 85707792 Jobber Drill Bit Wire 55 Hss Tin

Product Description

The HERTEL 85707792 is a jobber-length twist drill bit designed for general-purpose drilling in metal, plastic, and similar materials. It is manufactured from high speed steel with a titanium nitride (TiN) coating that extends cutting edge life and reduces friction during operation. The bit is sized to wire gauge 55, which corresponds to a decimal diameter of 0.0520 inches. It features a 118-degree standard point angle and a right-hand spiral flute configuration for efficient chip evacuation. Overall length is 1-7/8 inches with a flute length of 7/8 inch. Machinists, maintenance technicians, and trade professionals use this bit for precision hole work requiring small-diameter wire-gauge sizing.

This bit is suited for use in benchtop drill presses, hand drills, and CNC applications where close-tolerance small-diameter holes are required. Its straight-cylindrical shank fits standard drill chucks without modification. The general-purpose grade makes it appropriate for light production drilling and maintenance repair operations across HVAC, electrical, plumbing, and mechanical trade applications where wire-gauge holes are commonly needed for fasteners, pilot holes, and instrument ports.

Key Features

• Wire size 55 (0.0520 inch decimal diameter) for precision small-hole applications
• High speed steel construction with TiN coating for extended tool life
• 118-degree standard point angle with web-thinned, tapered web geometry
• Right-hand cut with regular spiral flute for consistent chip removal
• Straight-cylindrical shank fits standard drill chucks directly
• Two-flute design optimized for general-purpose drilling in a range of materials

Compatibility

Designed as a general-purpose jobber-length drill bit fitting any standard drill chuck that accepts a 0.0520-inch straight-cylindrical shank, suitable for drill presses, hand drills, and CNC spindles used across trade and light production applications.

Installation Notes

This bit is installed and removed by a licensed or qualified machinist or trade technician using a standard keyed or keyless drill chuck. Ensure the drill or drill press is fully powered down and secured before changing bits. Use appropriate cutting fluid or lubrication when drilling ferrous metals to preserve coating and edge life. Inspect the cutting edge before each use and replace if chipping or wear is observed.