Hertel 84579861 Jobber Drill Bit 15/32 in 135 Deg Hss Tin

Product Description

The HERTEL 84579861 is a heavy-duty jobber-length drill bit designed for general-purpose holemaking in metal, wood, and composite materials. It features a 15/32 inch (0.4688 inch decimal) diameter with a 135-degree split point that reduces walking and minimizes the need for a center punch. The titanium nitride (TiN) coating extends tool life by increasing surface hardness and reducing friction during cutting. With a 5-3/4 inch overall length and a two-flute spiral design, this bit delivers efficient chip evacuation in a standard jobber format. It is intended for use by machinists, maintenance technicians, pipefitters, and HVAC or plumbing tradespeople performing field or shop drilling operations.

This drill bit is suited for residential and commercial trade applications where consistent, accurate holes in the 0.4000 to 0.5000 inch decimal range are required. The straight-cylindrical shank fits standard three-jaw drill chucks on both corded and cordless drills as well as drill presses. The regular spiral flute and web-thinned, tapered web construction make it effective for hand-held drilling and machine setups. It conforms to NAS specification designation standards for tooling grade and geometry.

Key Features

• 135-degree split point reduces bit walking and improves hole entry accuracy
• TiN coating increases surface hardness and extends cutting tool service life
• Web-thinned, tapered web design lowers feed force requirements
• Two-flute regular spiral configuration promotes effective chip clearance
• Heavy-duty grade construction built for demanding trade and shop use
• Straight-cylindrical shank compatible with standard drill chucks

Compatibility

Designed for use in standard three-jaw drill chucks accepting a 15/32 inch straight-cylindrical shank, compatible with handheld drills and drill presses across residential and commercial jobsite applications.

Installation Notes

This bit should be installed and operated by qualified tradespeople following safe drilling practices. Secure the workpiece before drilling and ensure the chuck is tightened firmly before operation. Use appropriate cutting fluid or coolant when drilling harder metals to preserve coating integrity and bit longevity. Inspect the cutting edges for wear or chipping before each use and replace the bit if the geometry is compromised.