Accupro 4500392 Screw Machine Drill Bit 8mm Tialn

Product Description

The ACCUPRO 4500392 is a screw machine length drill bit engineered for high-performance drilling in demanding materials. Built from solid carbide with a titanium aluminum nitride (TiAlN) coating, it delivers extended tool life and heat resistance at elevated cutting speeds. The 8.00 mm diameter, web-thinned 140-degree point geometry reduces entry thrust and improves centering accuracy. At 79.00 mm overall length with a 41.00 mm flute length, this bit is sized for compact, rigid setups common in CNC machining centers and drill presses. It runs a standard 8.00 mm straight cylindrical shank and two regular spiral flutes. Coolant-through capability supports chip evacuation in deep-hole applications. This is a professional-grade cutting tool for machinists and tool-room technicians.

This drill bit is suited for drilling stainless steels and other tough ferrous alloys in both production and job-shop environments. The 3xD flute-to-diameter ratio and web-thinned point make it a practical choice for tight-tolerance through-holes in fixtures, structural components, and precision assemblies. It follows DIN specification standards and fits the ACCUPRO ASSC140-TA-CL series, making it a direct selection within that line for 8.00 mm to 9.50 mm diameter range applications.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard materials
• TiAlN coating provides thermal protection and extends cutting life at high speeds
• 140-degree web-thinned point reduces thrust force and improves self-centering
• Coolant-through design supports chip evacuation in deep drilling applications
• Straight cylindrical shank for use in standard drill chucks and collet systems
• DIN specification compliance ensures dimensional consistency

Compatibility

Part of the ACCUPRO ASSC140-TA-CL series, covering the 8.00 mm to 9.50 mm drill bit size range (0.3000 to 0.3500 decimal inch). Designed for use in CNC machining centers, drill presses, and manual mills where a straight-shank screw machine length bit is required. Primary workpiece material is stainless steels.

Installation Notes

Installation and use of this cutting tool should be performed by qualified machinists familiar with carbide tooling. Ensure the spindle and tool holder are clean and properly torqued before operation. Activate coolant flow before engaging the cut when using the through-coolant feature. Carbide is brittle — avoid lateral loading, interrupted cuts without appropriate feeds, or dropping the bit on hard surfaces.