Hertel H95006205 Jobber Drill Bit Letter F Hss

Product Description

The HERTEL H95006205 is a Letter F jobber-length drill bit designed for general-purpose holemaking in metal, wood, and similar materials. Built from high speed steel with an oxide and TiN coating, it delivers added wear resistance and heat dissipation during repeated use. The 137-degree split point reduces walking and lowers the thrust required to start the hole without a center punch. With an overall length of 4.125 inches and a flute length of 2.25 inches, this bit fits standard three-jaw chucks on drill presses and hand drills alike. Machinists, maintenance techs, and fabricators reach for this size when drilling holes sized to the Letter F designation at 0.2570 inch decimal equivalent.

This jobber drill is suited for production and maintenance applications in metalworking shops, manufacturing facilities, and field service environments. The right-hand spiral flute and regular helix clear chips efficiently in through-hole and blind-hole operations on ferrous and non-ferrous stock. It conforms to ANSI specification standards and falls within the 0.2500 to 0.3000 inch drill size range, making it a common replacement when a Letter F bit wears out or breaks mid-job.

Key Features

• Letter F size at 0.2570 inch decimal equivalent for precise hole sizing
• 137-degree split point reduces thrust and eliminates the need for a center punch
• High speed steel construction with oxide and TiN coating for extended tool life
• Right-hand, regular-helix spiral flute promotes efficient chip evacuation
• Jobber-length series provides a balanced reach-to-rigidity ratio for general drilling
• Three flats on the shank resist slipping in standard chuck jaws

Compatibility

Designed as a standard jobber-length Letter F drill bit conforming to ANSI specifications, suitable for use in any right-hand drill press, CNC machine, or hand drill with a chuck that accepts a 0.2570 inch shank diameter.

Installation Notes

Installation and use of this bit should be performed by machinists or qualified tradespeople familiar with rotating cutting tools. Ensure the drill press or hand drill is fully powered down and the chuck is secured before changing bits. Wear appropriate eye protection and secure the workpiece before drilling. Do not exceed the rated speed range for the material being drilled, and allow adequate chip clearance during deep-hole operations.