Precision Twist Drill 5995688 Taper Length Cobalt Drill Bit

Product Description

The PRECISION TWIST DRILL 5995688 is a Series M52CO taper length drill bit designed for high-performance drilling in a wide range of metalworking and industrial applications. Made from cobalt tool steel with a gold oxide finish, this bit handles tough materials that standard high-speed steel bits struggle with. The split point geometry at 135 degrees reduces walking and enables self-centering starts without a center punch. At 0.1610 inches in diameter (wire size 20) with a 3-3/8 inch flute length and 5-3/4 inch overall length, it provides extended reach for deeper holes in production and maintenance drilling environments. Licensed machinists, tool and die workers, and maintenance mechanics are the primary installers.

This drill bit is suited for use in drill presses, CNC machining centers, and hand-held power tools where a straight cylindrical shank is compatible. The taper length body offers greater reach than a jobber length bit while maintaining rigidity. The 6xD flute-to-diameter ratio and web-thinned, tapered web configuration promote efficient chip evacuation. It is well matched for work on alloy steel, stainless steel, cast iron, carbon steel, aluminum, brass, bronze, copper, nickel alloys, magnesium, hardened steel, high-strength bronze, and reinforced plastics, among other materials. Right-hand cut spiral flutes are standard.

Key Features

• Cobalt tool steel construction with gold oxide finish for heat and wear resistance in tough materials
• 135-degree split point reduces thrust and eliminates walking for self-centering starts
• Taper length body at 5-3/4 inches overall length provides extended reach beyond standard jobber bits
• Web-thinned, tapered web improves chip evacuation and reduces cutting force
• Straight cylindrical shank at 0.1610 inches diameter fits standard drill chucks without adapters
• Conforms to ANSI standards; rated heavy-duty for demanding production use

Compatibility

Designed as an OEM-style taper length replacement drill bit for use in any drill press, machining center, or power drill accepting a straight cylindrical shank at 0.1610 inches diameter.

Installation Notes

This bit is installed by machinists or maintenance mechanics in standard three-jaw or keyless drill chucks. Ensure the shank is fully seated and the chuck is properly tightened before operation. Use appropriate cutting fluid or coolant for the material being drilled to extend bit life, noting this bit does not support coolant-through delivery. Secure the workpiece firmly before drilling to prevent movement and bit breakage.