Precision Twist Drill 5995708 Taper Length Cobalt Drill Bit

Product Description

The PRECISION TWIST DRILL 5995708 is a taper length cobalt drill bit in the M52CO series, sized for a No. 4 wire gauge (0.2090 inches decimal diameter). It features a 135-degree split point for self-centering starts without a center punch, reducing walking on hard or slick surfaces. The straight cylindrical shank and right-hand spiral flute geometry are ground to ANSI standards. The gold oxide coating provides surface lubricity and heat resistance during high-performance drilling operations. Machinists, tool-and-die technicians, and maintenance tradespeople use this bit for heavy-duty applications in metal fabrication and field service.

This drill bit is rated for use across a wide range of materials including alloy steel, carbon steel, hardened steel, stainless steel, cast iron, malleable iron, aluminum, aluminum alloy, brass, bronze, high-strength bronze, copper, nickel, nickel alloy, magnesium, magnesium alloy, cermet, graphite, and reinforced plastic. The taper length body provides additional reach compared to jobber-length bits, making it suitable for deeper bores where standard-length drills fall short. It is well-suited to both production drilling and maintenance repair operations.

Key Features

• 135-degree split point for self-centering entry — no pilot hole required on most metals
• Cobalt tool material with gold oxide finish for extended heat and wear resistance
• Taper length design (6-inch OAL) provides extra reach over jobber-length equivalents
• Web-thinned, tapered web configuration reduces thrust force and improves chip evacuation
• Right-hand, regular spiral flute for reliable chip clearing in through-hole drilling
• ANSI-standard straight cylindrical shank fits standard drill chucks and collets without modification

Compatibility

Designed as an OEM-style replacement or direct substitute taper length drill bit for use in any standard drill chuck or collet accepting a 0.2090-inch straight cylindrical shank, consistent with ANSI tooling specifications.

Installation Notes

Install in a drill press, hand drill, or machining center with a chuck rated for the 0.2090-inch shank diameter; confirm the chuck is fully tightened before operation. Power down and de-energize the machine before changing bits. Use appropriate cutting fluid for the material being drilled to extend bit life and reduce heat buildup. Dispose of worn cobalt tooling per applicable shop safety and waste regulations.