Hertel 84578582 Jobber Drill Bit Letter G Hss Tin

Product Description

The HERTEL 84578582 is a jobber-length drill bit sized to Letter G (0.2610 inches) for general-purpose metal drilling applications. It is manufactured from high speed steel (HSS) with a titanium nitride (TiN) coating that extends cutting edge life and reduces friction during operation. The bit features a standard 118-degree split point angle with web thinning for easier penetration and reduced walking on entry. Overall length is 4.125 inches with a 2.875-inch spiral flute length. The straight-cylindrical shank measures 0.2610 inches in diameter and seats in standard drill chucks. This bit is suited for machinists, maintenance technicians, and trade professionals drilling steel, aluminum, and similar materials.

This jobber-length drill bit is designed for use in portable drills, drill presses, and CNC or manual machine tool setups where a Letter G diameter is required. It fits within the 0.2500 to 0.3000 inch decimal inch size range, making it a practical choice for tapping preparation, clearance holes, and through-hole work in light manufacturing, HVAC fabrication, plumbing rough-in, and general mechanical service environments. The right-hand cut and regular spiral configuration are compatible with standard clockwise-rotating spindles.

Key Features

• Letter G size — 0.2610 inches decimal equivalent for precise hole sizing
• TiN coating reduces wear and extends tool life compared to uncoated HSS
• 118-degree standard point angle with web thinning for reduced entry force
• Tapered web configuration with 2-flute spiral design for efficient chip evacuation
• Straight-cylindrical shank fits standard 3-jaw drill chucks without adapters
• Right-hand cut for use with all standard clockwise-rotating drill spindles

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with any standard drill chuck or collet accepting a 0.2610-inch straight-cylindrical shank, including portable hand drills, drill presses, and manual or CNC machine tool spindles.

Installation Notes

Secure the shank fully in the chuck and verify runout before drilling. Use appropriate cutting fluid or lubricant when drilling steel to preserve coating life. Always wear eye protection and ensure the workpiece is properly clamped before operation. Inspect the cutting edges for chipping or wear before each use and replace the bit if the point is damaged.