Accupro 4500302 Screw Machine Drill Bit 15/64 in Carbide

Product Description

The ACCUPRO 4500302 is a screw machine length drill bit designed for high-performance drilling in demanding metalworking applications. Built from solid carbide and coated with TiAlN, it delivers the hardness and heat resistance needed to cut through stainless steel and other tough alloys without premature wear. At 15/64 inches (0.2344 inches) in diameter and 3.228 inches overall length, this is a stub-style bit engineered for rigidity and reduced deflection at the cutting zone. The 140-degree web-thinned point geometry initiates cuts cleanly and self-centers on the workpiece. Machinists, tool-and-die technicians, and maintenance professionals install this bit in CNC machining centers, drill presses, and production drilling setups.

This drill bit is suited for production and precision drilling in stainless steels, making it a practical choice for fabrication shops, maintenance facilities, and manufacturing environments where hole quality and tool life matter. The screw machine length design keeps the bit compact, which reduces vibration and chatter compared to jobber-length alternatives. Coolant-through capability makes it compatible with through-spindle coolant systems, extending tool life when cutting heat-generating materials like stainless steel. It is packaged individually and sold as a single unit.

Key Features

• Solid carbide construction with TiAlN coating for extended tool life in stainless steel and hard alloys
• 140-degree web-thinned point for reduced thrust and clean hole entry
• Coolant-through design compatible with through-spindle coolant systems
• Straight cylindrical shank fits standard drill chucks and collet holders
• 2-flute regular spiral configuration provides efficient chip evacuation
• Screw machine length (stub) body reduces deflection and improves hole straightness

Compatibility

The 4500302 belongs to ACCUPRO series ASSC140-TA-CL, covering drill bit sizes from 0.2000 to 0.2500 decimal inches, and is rated for use primarily in stainless steels. It fits any spindle or chuck system accepting a 0.2344-inch straight cylindrical shank.

Installation Notes

Installation is performed by machinists or tool technicians on CNC machining centers or drill presses. Confirm spindle speed and feed rate are appropriate for the workpiece material and bit diameter before engaging the cut. Ensure the coolant supply is functioning if using through-spindle coolant to avoid thermal damage to the carbide. Inspect the shank seating in the collet or chuck before each use to prevent runout that can chip carbide cutting edges.