Titan Usa TC79221 Jobber Drill 21 Wire Solid Carbide

Product Description

The TITAN USA TC79221 is a solid carbide jobber-length drill bit sized to wire gauge 21 (0.1590 inches decimal), designed for precision drilling in demanding materials. The 118-degree split point reduces walking at entry and lowers the thrust force needed to start the cut. An ALTiN (aluminum titanium nitride) coating extends tool life by increasing surface hardness and heat resistance at elevated cutting speeds. With an overall length of 2.5 inches and a 1.375-inch spiral flute, this bit suits CNC machining centers, drill presses, and hand-held power tools used by machinists and tool-and-die professionals in production environments.

The TC79221 is built for drilling steel, stainless steel, cast iron, superalloys, and titanium — material groups classified as P, M, K, and S in ISO workpiece coding. It fits general-purpose drilling applications where a standard jobber-length reach is appropriate. The straight cylindrical shank (0.1590-inch diameter) seats in standard three-jaw chucks without modification. This bit is part of the TC79 series, a regular-spiral, 9xD flute-to-diameter ratio line aimed at general-purpose production drilling.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard and abrasive workpiece materials
• ALTiN coating increases surface hardness and heat resistance, extending tool life at higher cutting speeds
• 118-degree split point reduces entry walking and lowers axial thrust during drill start
• Right-hand cutting, 2-flute regular spiral flute for efficient chip evacuation
• Straight cylindrical shank fits standard drill chucks without adapters
• 9xD flute-to-diameter ratio provides adequate flute length for general-purpose depth requirements

Compatibility

Designed as a general-purpose jobber drill for use in standard three-jaw chucks and collet-style tool holders that accept a 0.1590-inch straight cylindrical shank. Suitable for machining steel, stainless steel, cast iron, superalloys, and titanium workpieces.

Installation Notes

Installation is performed by machinists or qualified machine operators. Secure the shank fully in a properly sized chuck or collet and verify runout before drilling. Coolant-through is not supported on this bit; apply cutting fluid externally when drilling stainless steel, superalloys, or titanium to manage heat buildup. Inspect the cutting edges for chipping before each use, as carbide is brittle and can fracture if subjected to interrupted cuts or side loading beyond the tool design.