Accupro 63310197 Carbide Jobber Drill Bit 4 Mm Altin

Product Description

The ACCUPRO 63310197 is a solid carbide jobber-length drill bit designed for high-performance drilling in demanding materials. Ground to a 140-degree notched point with web thinning, it starts fast and centers accurately without a pilot hole. The AlTiN (aluminum titanium nitride) coating increases surface hardness and heat resistance, making it well suited for dry or minimal-lubrication drilling in hardened steels, stainless, cast iron, and similar tough workpiece materials. The straight-cylindrical shank measures 4 mm in diameter, matching the cutting diameter for straightforward chuck mounting in standard drill chucks or collet holders.

This bit is intended for use in machining centers, CNC drilling operations, and manual drill presses where precise hole location and clean entry are required. The regular spiral flute geometry provides efficient chip evacuation in a wide range of metals and engineering plastics. With a flute-to-diameter ratio of 4xD and a maximum recommended drilling depth of 16.80 mm (approximately 0.661 inches), it is optimized for shallow to moderate-depth through-holes and blind holes in production and job-shop environments. Machinists, tool-and-die workers, and maintenance mechanics will find it appropriate for general precision drilling tasks.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard and abrasive materials
• AlTiN coating provides high heat resistance and extended tool life in dry or semi-dry cutting conditions
• 140-degree notched point with web thinning reduces thrust and improves self-centering
• Right-hand cut, regular spiral flute for efficient chip evacuation
• Straight-cylindrical 4 mm shank fits standard drill chucks and collet systems without adapters
• Parallel web configuration maintains consistent edge strength along the flute length

Compatibility

Designed as an OEM-style replacement or direct tooling selection for applications requiring a 4 mm diameter solid carbide jobber drill bit with a straight-cylindrical shank; fits standard 4 mm collets and drill chucks used in CNC machining centers and manual drill presses.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Ensure the machine spindle is fully stopped and locked out before loading or removing the bit. Seat the shank fully into the collet or chuck and verify runout with a dial indicator before production drilling. Follow the machine manufacturer and tooling guidelines for feed rate and spindle speed when cutting hardened or stainless materials, as excessive feed can chip carbide edges.