Hertel 84578152 Jobber Drill Bit Wire 60 0.0400in Hss

Product Description

The HERTEL 84578152 is a jobber-length drill bit sized at wire gauge 60 (0.0400 inches decimal), manufactured from high speed steel with a bright uncoated finish. It features a standard 118-degree split point with web thinning for improved center starting and reduced walking on entry. The spiral flute design with a regular helix and tapered web configuration promotes efficient chip evacuation during drilling operations. At 1.625 inches overall length with an 11/16-inch flute length, this bit is suited to light precision drilling work in metal, plastic, and similar materials. It is installed by machinists, tool-and-die technicians, HVAC fabricators, and general maintenance trades.

This drill bit is intended for general-purpose drilling in light-gauge materials where small-diameter precision holes are required. Typical applications include sheet metal work, printed circuit board fabrication, instrument panel drilling, and fine mechanical assembly tasks. The straight-cylindrical shank seats directly in standard drill chucks without requiring a collet adapter. The right-hand cutting direction is compatible with conventional clockwise-rotation drill presses, hand drills, and CNC spindles.

Key Features

• Wire gauge size 60 with 0.0400-inch decimal diameter for precision small-hole drilling
• High speed steel construction provides adequate hardness for general-purpose metal and plastic drilling
• 118-degree standard point angle with web thinning reduces entry force and walking
• Bright uncoated finish allows visual inspection of cutting edge condition
• Regular spiral flute with tapered web configuration supports consistent chip clearance
• Straight-cylindrical shank fits standard three-jaw drill chucks without adapters

Compatibility

Designed as a general-purpose jobber-length drill bit for use in standard drill chucks accepting straight-cylindrical shanks with a 0.0400-inch diameter.

Installation Notes

Install and remove drill bits only with the drill or press fully powered down and the chuck key removed from the chuck. Secure the workpiece with a vise or clamp before drilling to prevent rotation and injury. For small-diameter bits at this size, use consistent feed pressure and appropriate cutting speed to avoid bit deflection or breakage. Inspect the cutting edges before each use and replace bits that show chipping or dulling to maintain hole quality.