Cleveland C16780 1/8 in Cobalt Taper Length Drill Bit

Product Description

The CLEVELAND C16780 is a taper length cobalt drill bit designed for demanding metal drilling applications in industrial and shop environments. Built to Series 2575 specifications, it features a 135-degree split point that reduces walking and minimizes the need for a center punch. The parabolic flute geometry improves chip evacuation and allows for faster feed rates compared to standard jobber geometry. At 0.125 inches in diameter with a 5.125-inch overall length and 2.75-inch flute length, this bit is suited for through-hole work in thicker stock where a standard-length drill would fall short. Licensed machinists, tool-and-die workers, and maintenance mechanics are the primary installers.

This drill bit is rated for use across a broad range of materials including aluminum, brass, carbon steel, cast iron, nickel alloy, plastic, stainless steel, and tool steel. Its cobalt construction and heavy-duty grade make it particularly effective in work-hardening alloys and high-temperature materials where high-speed steel bits lose their edge prematurely. The taper length body provides added rigidity and reach, making it a practical choice for production drilling operations and deep-hole work in plate or structural stock.

Key Features

• 135-degree split point reduces walking and eliminates the need for center punching on most materials
• Parabolic flute design accelerates chip removal and supports higher feed rates
• Cobalt M42 grade construction resists heat buildup in stainless steel, nickel alloy, and tool steel
• Web-thinned and tapered web configuration reduces cutting resistance at the chisel edge
• Straight shank with 0.125-inch diameter fits standard drill chucks without adapters
• Meets ASME B94.11M and DIN 340 standards with DIN 338 specification compliance

Compatibility

Rated for drilling aluminum, brass, carbon steel, cast iron, nickel alloy, plastic, stainless steel, and tool steel. Fits any standard drill chuck or collet accepting a 0.125-inch straight shank.

Installation Notes

This bit is installed and operated by machinists, toolmakers, and maintenance mechanics using drill presses, CNC machining centers, or hand drills. Ensure the workpiece is securely clamped before drilling to prevent rotation and bit breakage. Use appropriate cutting fluid for the material being drilled, particularly when working stainless steel or nickel alloys. Verify spindle speed and feed rate are appropriate for the material and bit diameter before beginning the cut.