Accupro 4500000 Jobber Drill Wire 8 Solid Carbide Tialn

Product Description

The ACCUPRO 4500000 is a solid carbide jobber-length drill bit designed for drilling hardened materials where standard high-speed steel tooling falls short. It carries a TiAlN (titanium aluminum nitride) coating that extends tool life under high-heat cutting conditions. The 140-degree split point with UR-thinned web reduces entry force and helps the bit self-center without a pilot hole. At 2.875 inches overall length with a 1.281-inch flute, this is a standard jobber proportion suited for general-purpose drilling in a drill press, CNC machining center, or hand-held power drill. The straight 0.250-inch shank fits conventional drill chucks with no adapter needed. Machinists, tool-and-die tradespeople, and maintenance technicians are the primary users.

This bit is sized to wire gauge number 8, which corresponds to 0.1990 inch in decimal. The slow spiral flute geometry is intentional for hardened-material applications: it provides better edge support and reduces chatter when cutting steels above 40 HRC. Typical applications include drilling hardened steel plate, tool steel, case-hardened components, and similar ferrous workpiece materials where a standard jobber drill would deflect or chip. The DIN specification designation confirms the geometry follows a recognized international standard, making it a reliable substitute in metric-influenced shops as well.

Key Features

• Solid carbide construction for rigidity and heat resistance in hardened-material drilling
• TiAlN coating extends cutting life under elevated temperatures
• 140-degree proprietary point angle with UR-thinned web for reduced entry force and self-centering
• Slow spiral flute geometry provides edge support and reduces chatter in hard materials
• Straight 0.250-inch shank fits standard drill chucks without adapters
• DIN specification geometry for consistent dimensional compliance

Compatibility

Designed for use in drilling hardened ferrous materials. Fits any drill chuck or collet accepting a 0.250-inch straight shank. No specific OEM system or model compatibility was stated in the product data.

Installation Notes

Secure the workpiece firmly before drilling to prevent movement, especially in hard materials where bit deflection risk is elevated. Use appropriate cutting fluid or coolant where the machine setup allows, even though this bit does not have through-coolant capability. Inspect the cutting edges before each use — solid carbide is brittle and a chipped edge on hardened stock can cause rapid tool failure. Machine spindle runout should be minimized; excessive runout accelerates edge wear on carbide tooling.