Accupro 4500179 Jobber Drill 9/32 in Solid Carbide Tialn

Product Description

The ACCUPRO 4500179 is a solid carbide jobber-length drill bit designed for high-performance drilling in demanding materials. Sized at 9/32 inch (0.2812 inch decimal) with a 5/16 inch straight cylindrical shank, it features a 140-degree proprietary point geometry and a TiAlN (titanium aluminum nitride) coating that extends tool life at elevated cutting temperatures. The two-flute regular spiral configuration evacuates chips efficiently, and the R-thinned web reduces entry force at the cutting tip. Licensed machinists, tool-and-die shops, and maintenance mechanics working in stainless steel and similar hard materials specify this grade for consistent hole quality and tool longevity.

This drill bit is rated for primary use in stainless steel and is built to ISO specification standards, making it well suited for precision metalworking applications in both production and maintenance environments. Coolant-through capability supports high-speed operation in deep-hole or high-heat scenarios. The 5xD flute-to-diameter ratio provides the reach typical of jobber-length drills while keeping the tool compact enough for standard drill chucks and CNC machining centers.

Key Features

• Solid carbide construction for rigidity and heat resistance in hard-material drilling
• TiAlN coating extends tool life by reducing friction and oxidation at high cutting temperatures
• 140-degree proprietary point geometry reduces walking and improves hole entry accuracy
• R-thinned web lowers thrust force and improves chip flow at the cutting tip
• Coolant-through design supports high-speed and deep-hole drilling operations
• Right-hand cutting, regular spiral flute, ISO specification designation

Compatibility

Designed as a high-performance jobber-length drill bit for use in stainless steel workpieces; compatible with standard drill chucks and CNC tool holders accepting a 5/16 inch straight cylindrical shank.

Installation Notes

Installation and use should be performed by qualified machinists or tooling professionals familiar with carbide tooling requirements. Secure the shank fully in the chuck or collet and verify runout before starting the cut. Carbide drill bits are brittle compared to high-speed steel - avoid interrupted cuts, side loading, or use in hand-held drills where flex can cause chipping or breakage. When coolant-through capability is used, ensure the machine spindle is equipped with a compatible through-spindle coolant system and that coolant pressure is appropriate for the application.