Hertel 79892675 Solid Carbide Jobber Drill Bit 21/64 in

Product Description

The HERTEL 79892675 is a solid carbide jobber-length drill bit designed for precision drilling in demanding production and maintenance environments. With a 21/64 inch (0.3281 inch) diameter and a standard 118-degree drill point angle, this bit delivers clean, accurate entry in ferrous and non-ferrous materials. The bright coating preserves the carbide substrate without adding dimensional buildup. At 4 inches overall length with a 2.5-inch spiral flute, the geometry suits standard jobber-length chucks and drill presses. A tapered web with web-thinned configuration reduces thrust requirements at the point. Rated to Material Grade C2, this bit is suited for high-performance production drilling applications where carbide rigidity outperforms high-speed steel.

This drill bit is appropriate for use in CNC machining centers, drill presses, and hand-held power tools with rigid setups. The straight-cylindrical shank fits standard three-jaw chucks without adapters. Right-hand cut with a regular spiral flute type makes it suitable for through-hole and blind-hole applications in metal fabrication shops, maintenance facilities, and industrial production environments. It is sold individually and is packaged as a single unit.

Key Features

• Solid carbide construction in Material Grade C2 for high-performance drilling applications
• 21/64 inch diameter with a diameter tolerance of -0.0005 to 0.0000 inches for consistent bore sizing
• 118-degree standard drill point angle with web-thinned, tapered web for reduced entry thrust
• 2.5-inch spiral flute length with regular spiral type for efficient chip evacuation
• Bright coating applied to solid carbide substrate without dimensional interference
• Straight-cylindrical shank fits standard three-jaw chucks without a collet adapter

Compatibility

Designed as an OEM-style replacement or direct-use jobber drill bit for standard three-jaw chucks and drill press spindles accepting a straight-cylindrical shank in the 21/64 inch diameter range.

Installation Notes

Installation and use should be performed by a qualified machinist or maintenance technician familiar with cutting tool safety. Secure the shank fully within the chuck jaws to the rated grip depth before operation. Ensure the drill press or machining center spindle speed is set to the appropriate surface footage for carbide tooling in the target material. Inspect the cutting edges and point geometry before each use — carbide is brittle and can chip if subjected to side-loading or interrupted cuts without proper setup.