Hertel 84579168 Jobber Drill 15/64 in 135 Deg Hss Oxide

Product Description

The HERTEL 84579168 is a high speed steel jobber-length drill bit designed for general-purpose holemaking in metal, wood, and composite materials. The bit measures 15/64 inches (0.2344 inches decimal) in diameter with a 3-7/8 inches overall length and a 2-5/8 inches flute length. The 135-degree split point reduces walking and decreases the force needed to start the hole without a center punch. An oxide coating provides corrosion resistance and reduces friction during cutting. This is a right-hand, two-flute design with a straight cylindrical shank and tapered web construction. Rated as heavy duty under the NAS specification designation, it suits demanding production and maintenance applications.

This drill bit is suited for production shops, maintenance and repair operations, and field service work where consistent hole quality in the 0.2000 to 0.2500 inch size range is required. The straight cylindrical shank fits standard three-jaw drill chucks used in drill presses, hand drills, and CNC drilling operations. The regular spiral flute geometry clears chips efficiently in through-hole and moderate-depth drilling scenarios. Machinists, maintenance technicians, pipefitters, and general fabricators commonly stock this size for everyday holemaking tasks.

Key Features

• 15/64 inch (0.2344 inch) diameter with 135-degree split point for reduced thrust and self-centering entry
• Web-thinned, tapered web construction lowers cutting resistance and improves chip evacuation
• High speed steel construction maintains hardness at elevated cutting temperatures
• Oxide coating reduces surface friction and provides light corrosion protection
• 3-7/8 inches overall length with 2-5/8 inches flute length suits standard jobber drilling depths
• NAS specification designation confirms heavy duty grade compliance

Compatibility

Designed as a standard jobber-length drill bit with a straight cylindrical shank; fits any three-jaw drill chuck accepting a 15/64 inch straight shank across drill presses, cordless and corded hand drills, and CNC drill heads.

Installation Notes

A licensed machinist or qualified maintenance technician should verify chuck compatibility and shank seating before operation. Ensure the drill press or hand drill is powered down and the chuck is fully secured before beginning the drilling operation. Cutting fluid or coolant is recommended when drilling ferrous metals to extend tool life, though this bit does not support coolant-through delivery. Follow applicable workplace safety standards and wear appropriate eye and hand protection during use.