Hertel H95006012 Jobber Drill Bit 1/4 in 137 Deg Hss

Product Description

The HERTEL H95006012 is a heavy-duty high speed steel jobber-length drill bit sized at 0.250 inches (1/4 inch) in diameter. It features a 137-degree split point geometry that reduces walking and allows the bit to self-center on entry without a pilot hole. The spiral flute design promotes chip evacuation during through-hole drilling. An oxide and TiN coating provides added surface hardness and lubricity, extending tool life in general-purpose holemaking applications. The right-hand cutting direction is standard for use with conventional drill presses, hand drills, and milling machine setups. Licensed trades and general machinists use this bit for production and maintenance drilling in steel, cast iron, and similar ferrous materials.

This jobber drill is suited for light to heavy-duty holemaking in metal fabrication shops, maintenance and repair operations, and job-site drilling tasks. The 4-inch overall length falls within standard jobber-series dimensions, making it compatible with common 3-jaw chucks and keyless chuck configurations. The 2-1/8-inch flute length accommodates typical material thicknesses encountered in structural steel, plate, and tubing work. With three flats on the shank, the bit resists slipping in chuck jaws under load.

Key Features

• 137-degree split point reduces walk and enables self-centering on flat or curved surfaces
• High speed steel construction rated for heavy-duty drilling in ferrous metals
• Oxide and TiN dual coating increases surface hardness and reduces friction
• Right-hand spiral flute design promotes efficient chip clearing
• 3-flat shank prevents rotation in chuck jaws under torque
• ANSI-specification jobber-series dimensions for broad chuck compatibility

Compatibility

Designed as a standard jobber-series drill bit conforming to ANSI specifications, suitable for use in conventional drill presses, hand drills, and milling machines equipped with 3-jaw or keyless chucks that accept a 1/4-inch straight shank.

Installation Notes

Installation and use should be performed by machinists, tool-and-die workers, or qualified tradespeople familiar with rotating cutting tools. Secure the shank fully in the chuck and confirm runout is within acceptable limits before drilling. Always wear appropriate eye protection and secure the workpiece before engaging the spindle. Do not exceed the drill press or hand drill manufacturer's recommended speed range for the material and bit diameter in use.