Accupro 4500422 Screw Machine Drill Bit 16mm Carbide

Product Description

The ACCUPRO 4500422 is a screw machine length drill bit engineered for high-performance drilling in demanding production environments. Built from solid carbide and coated with TiAlN, it is designed to handle tough workpiece materials including stainless steels. The 140-degree split web-thinned point reduces thrust at entry and improves centering accuracy. At 16 mm in diameter with a 115 mm overall length, this short-body geometry delivers rigidity in confined setups. Coolant-through capability supports heat management at elevated spindle speeds. The straight cylindrical shank fits standard drill chucks and collet holders without modification.

This drill bit is suited for production drilling in machining centers, CNC mills, and drill presses where short-flute rigidity is required. The 3xD flute-to-diameter ratio makes it appropriate for moderate-depth holes in stainless steel, alloy steels, and similarly challenging materials. It is a practical choice for tool and die shops, aerospace fabrication cells, and precision machining operations running high cutting speeds. The right-hand spiral flute and regular spiral geometry provide consistent chip evacuation throughout the cut.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard materials
• TiAlN coating extends tool life at elevated cutting temperatures
• 140-degree web-thinned point reduces entry thrust and improves hole accuracy
• Coolant-through design supports high-speed drilling in stainless steels
• Screw machine length body provides added rigidity over jobber-length drills
• Straight cylindrical shank compatible with standard collets and drill chucks

Compatibility

Designed as an OEM-style screw machine length drill bit for use in standard 16 mm straight-shank drill chucks and collet systems on CNC machining centers and manual drill presses. Listed under series ASSC140-TA-CL per DIN specification designation.

Installation Notes

Installation and tool changes should be performed with the machine powered down and the spindle fully stopped. Secure the straight shank in a collet or drill chuck rated for the shank diameter before engaging the spindle. Verify coolant-through channels are clear and compatible with the machine tool spindle before use. Licensed machinists and CNC operators should set feeds and speeds according to the workpiece material and machine tool specifications.