Hertel 85707404 Jobber Drill Bit Wire 18 Tin Hss

Product Description

The HERTEL 85707404 is a jobber-length drill bit designed for general-purpose drilling in metal, wood, and plastic. It carries a wire gauge size of 18, equivalent to 0.1695 inches in decimal, and is manufactured from high speed steel with a titanium nitride (TiN) coating that extends cutting edge life and reduces heat buildup during operation. The 118-degree standard point angle suits the widest range of common materials. With an overall length of 3.25 inches and a flute length of 2.125 inches, this bit fits standard drill chucks and drill press spindles used daily in machine shops, fabrication environments, and maintenance applications.

This bit is suited to production and job-site drilling where wire gauge sizing is called out on engineering drawings or maintenance specs. The straight-cylindrical shank at 0.1695 inches diameter seats securely in keyed or keyless chucks. The regular spiral, two-flute design evacuates chips efficiently during through-hole and blind-hole operations. It is a single-piece unit packaged individually, making it a straightforward replacement or addition to a shop drill index.

Key Features

• Wire size 18 (0.1695 inches decimal) for precise gauge-specified applications
• TiN coating reduces friction and extends tool life compared to uncoated HSS
• 118-degree standard point angle for general-purpose drilling across common materials
• Web-thinned, tapered web configuration reduces thrust force at drill entry
• Right-hand cut, regular spiral with two flutes for efficient chip evacuation
• Straight-cylindrical shank fits standard keyed and keyless chucks without adapters

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with any drill press, handheld power drill, or CNC drilling spindle accepting a straight-cylindrical shank in the 0.1500 to 0.2000 inch diameter range.

Installation Notes

Installation is performed by machinists, maintenance technicians, and fabricators using standard keyed or keyless drill chucks. Ensure the chuck jaws are fully tightened and the shank is seated completely before starting the spindle. Use appropriate cutting fluid or coolant for ferrous materials to preserve coating integrity and bit life. Inspect the cutting edges before each use and replace the bit if chipping or excessive wear is observed.