Hertel 84579671 Jobber Drill Bit 3/16 in Hss Tin 135 Deg

Product Description

The HERTEL 84579671 is a 3/16 inch diameter jobber-length drill bit designed for general-purpose holemaking in metal, wood, and composite materials. Built from high speed steel (HSS) with a titanium nitride (TiN) coating, it delivers extended tool life and reduced friction in demanding drilling applications. The 135-degree split point provides fast penetration and self-centering entry, reducing the need for a center punch on most materials. At 3.5 inches overall length with a 2.313-inch flute length, it fits standard drill chucks and magnetic drill press setups. Machinists, maintenance technicians, HVAC installers, plumbers, and electricians all reach for jobber drills like this for everyday field and shop drilling tasks.

This drill bit is suited for use in hand drills, drill presses, and CNC spindles where a straight-cylindrical shank is appropriate. The heavy-duty grade rating makes it a reliable choice for repetitive production runs or tough field conditions. The TiN coating adds surface hardness and reduces built-up edge on ferrous materials. It is sold individually and is a practical replacement for worn or broken 3/16 inch bits across a wide range of trade applications including sheet metal work, electrical rough-in, pipe hanger installation, and light structural drilling.

Key Features

• 135-degree split point for self-centering entry and fast chip ejection
• TiN coating increases surface hardness and extends tool life versus uncoated HSS
• Web-thinned, tapered web construction reduces thrust force during drilling
• Right-hand spiral flute with regular helix for efficient chip clearance
• Straight-cylindrical shank fits standard 3-jaw drill chucks
• Heavy-duty grade rating per NAS specification designation

Compatibility

Designed as a standard jobber-length replacement drill bit for any drill press, hand drill, or CNC machine accepting a 3/16 inch straight-cylindrical shank bit.

Installation Notes

Secure the shank fully in the chuck and verify concentricity before drilling. Always wear appropriate eye protection and secure the workpiece before operation. Use cutting fluid or lubricant when drilling ferrous metals to preserve coating life and reduce heat buildup. Inspect the cutting edges before each use and replace if chipping or excessive wear is present.