Hertel 84579093 Jobber Drill Bit 1/8 Inch Hss

Product Description

The HERTEL 84579093 is a 1/8 inch diameter jobber-length drill bit designed for general-purpose holemaking in metal, wood, and composite materials. Manufactured from high speed steel (HSS) with an oxide coating, it features a 135-degree split point that reduces walking and lowers the thrust needed to start a hole without a center punch. The web-thinned, tapered web construction improves chip evacuation and cutting efficiency. With a 2-flute spiral flute design and right-hand cutting direction, this bit suits standard drill presses, hand drills, and CNC drilling operations. It carries a NAS specification designation and is rated as a heavy-duty grade tool.

This jobber drill is suited for production and maintenance applications where consistent, accurate hole sizes in the 0.1000 to 0.1500 inch decimal range are required. The straight-cylindrical shank measures 1/8 inch in diameter, making it compatible with standard 3-jaw chucks across a wide range of portable and stationary drilling equipment. Typical users include machinists, maintenance technicians, and fabricators working in light industrial and commercial settings. The oxide finish provides a degree of corrosion resistance and reduces friction during cutting.

Key Features

• 135-degree split point reduces walking and lowers entry thrust
• High speed steel construction with oxide coating for durability and corrosion resistance
• Web-thinned tapered web improves chip flow and reduces heat buildup
• Right-hand, 2-flute spiral design for standard drilling operations
• Straight-cylindrical 1/8 inch shank fits standard drill chucks
• NAS specification designation, heavy-duty grade

Compatibility

Designed as a jobber-series replacement drill bit compatible with standard 3-jaw drill chucks accepting a 1/8 inch straight-cylindrical shank, suitable for use in portable hand drills, drill presses, and CNC drilling equipment.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or tradespeople familiar with safe drilling practices. Ensure the drill chuck is fully tightened and the workpiece is securely clamped before operation. Verify spindle speed is appropriate for the material and bit diameter per standard machining guidelines. Inspect the cutting edges for wear or damage before each use and replace the bit if chipping or dulling is observed.