Hertel 85704179 Jobber Drill Bit Wire 40 0.0980 in Hss

Product Description

The HERTEL 85704179 is a jobber-length drill bit sized to wire gauge 40, equal to 0.0980 inches in decimal. It is manufactured from high-speed steel with a bright, uncoated finish and is built for general-purpose drilling across metal, plastic, and similar materials. The 118-degree standard point angle allows for consistent entry without requiring a center punch on most work surfaces. A spiral, regular-helix flute design with tapered web and web-thinned geometry promotes chip evacuation and reduces thrust during feed. This bit is suited for use in hand drills, drill presses, and CNC or manual machining centers on the shop floor or in the field.

This jobber-length drill bit is intended for general-purpose trade and shop use where small-diameter precision holes are required. Typical applications include sheet metal drilling, electrical conduit work, plumbing rough-in, HVAC equipment assembly, and light machining tasks. The straight-cylindrical shank seats cleanly in standard three-jaw chucks, making it compatible with a wide range of portable and bench-mounted drilling equipment. At 2.375 inches overall length, this bit is suited to close-tolerance work where a longer bit would deflect.

Key Features

• Wire gauge 40 size, 0.0980 inches decimal diameter for small-hole precision work
• High-speed steel construction handles general-purpose drilling across metals and plastics
• 118-degree standard point angle for clean entry on most workpiece materials
• Spiral flute with tapered web and web-thinned geometry for improved chip clearance
• Straight-cylindrical shank fits standard three-jaw chucks without adapters
• Right-hand cutting direction, compatible with all standard clockwise-drive equipment

Compatibility

Designed as a general-purpose jobber-length drill bit for use in any standard three-jaw chuck accepting a 0.0980-inch straight-cylindrical shank, including hand drills, drill presses, and manual or CNC machining centers.

Installation Notes

Installation and use of this drill bit should be performed by a qualified machinist, tradesperson, or trained operator following applicable shop safety procedures. Secure the workpiece before drilling and confirm the chuck is properly tightened before powering the drill. Do not exceed the recommended feed rate or spindle speed for the bit diameter and material being drilled. Inspect the bit for wear or damage before each use and replace if the cutting edges are chipped or the flutes are clogged.