Precision Twist Drill 6000720 Cobalt Jobber Drill 4.70mm

Product Description

The PRECISION TWIST DRILL 6000720 is a cobalt high-speed steel jobber-length drill bit designed for general-purpose drilling in steel and other demanding workpiece materials. It features a 135-degree split point with web thinning, which reduces the force needed to start a cut and helps center the bit without a pilot hole. The straw oxide finish provides a degree of lubricity and corrosion resistance during drilling operations. At 3.1563 inches overall length with a 1.8438-inch flute, this bit fits standard drill chucks and is suited for use in hand drills, drill presses, and CNC drilling setups where a straight cylindrical shank is required.

This drill bit is built for cutting steel, cast iron, non-ferrous metals, and superalloys, making it a practical choice for HVAC fabrication, plumbing rough-in, electrical panel work, and general metalworking. The 2ACO series is manufactured to DIN 338 and ANSI standards, confirming dimensional consistency across the series. The 4.70 mm diameter corresponds to 0.1850 decimal inch, which falls in the 0.1500 to 0.2000 inch size range. Typical users include machinists, maintenance technicians, and trade professionals who need a reliable, heavy-duty general-purpose drill bit for metal drilling tasks.

Key Features

• Cobalt steel construction rated for heavy-duty drilling in steel and difficult alloys
• 135-degree split point with web thinning for self-centering starts and reduced thrust
• Straw oxide finish for added lubricity and surface protection
• Right-hand cutting, regular spiral flute, 2-flute configuration for efficient chip evacuation
• Straight cylindrical shank fits standard 3-jaw drill chucks without an adapter
• Manufactured to DIN 338 and ANSI standards for consistent dimensional accuracy

Compatibility

Designed for use in steel, cast iron, non-ferrous metals, and superalloys per workpiece material codes P, M, K, N, and S. Compatible with any drill press, hand drill, or CNC spindle accepting a 0.1850-inch straight cylindrical shank.

Installation Notes

Install this drill bit in a properly rated drill press, hand drill, or CNC spindle and secure the straight shank firmly in the chuck before operation. Shut down and de-energize any power tool completely before changing bits. Use cutting fluid or coolant appropriate for the workpiece material to extend bit life, particularly when drilling hardened steel. Follow shop safety and applicable ANSI machining guidelines during use.