Precision Twist Drill 5996288 Taper Length Drill Bit

Product Description

The PRECISION TWIST DRILL 5996288 is a cobalt taper length drill bit designed for high-performance drilling in demanding materials. Built to the M51CO series standard, it features a 37/64 inch (0.5781 inch) diameter, a 135-degree notched split point for self-centering starts, and a right-hand spiral flute configuration. The cobalt tool material provides heat resistance and edge retention beyond standard high-speed steel, making it suitable for production drilling environments. Machinists, tool-and-die workers, and maintenance technicians install this bit when working with difficult-to-machine materials that generate high cutting temperatures.

The 5996288 is rated for use in alloy steel, carbon steel, hardened steel, stainless steel, cast iron, malleable iron, nickel, nickel alloys, aluminum, aluminum alloys, brass, bronze, high-strength bronze, copper, magnesium, magnesium alloys, cermet, graphite, and reinforced plastics. Its taper length body and 6xD flute-length-to-diameter ratio provide additional reach compared to jobber-length bits, making it well suited for deeper hole applications in both manual and CNC machine setups.

Key Features

• Cobalt tool material for superior heat resistance and durability in hard and abrasive materials
• 135-degree notched split point enables self-centering starts without a center punch on most materials
• Right-hand spiral flute with web-thinned, tapered web configuration reduces thrust and improves chip evacuation
• Taper length body with 6xD flute ratio provides greater reach than standard jobber-length bits
• Straight shank fits standard drill chucks without adapters
• Meets ANSI standards; heavy-duty grade construction for continuous production use

Compatibility

Designed for use in standard drill chucks accepting a 0.5781 inch straight shank. Compatible material applications include alloy steel, stainless steel, hardened steel, cast iron, aluminum, brass, bronze, copper, nickel alloys, magnesium alloys, and reinforced plastics as stated in the manufacturer specifications.

Installation Notes

Install in a drill press, lathe tailstock, or CNC machining center with a chuck rated for the 0.5781 inch straight shank diameter. Ensure the workpiece is securely clamped before beginning the cut. Use appropriate cutting fluid for the material being drilled to extend tool life and maintain hole quality. Inspect the cutting edges before each use and replace the bit if chipping or excessive wear is observed.