Precision Twist Drill 5999682 Cobalt Jobber Drill 1.80mm

Product Description

The PRECISION TWIST DRILL 5999682 is a cobalt high-speed steel jobber-length drill bit designed for general-purpose drilling in steel and other demanding workpiece materials. Built to DIN 338 and ANSI standards, this bit features a 135-degree split point that reduces walking and cutting pressure at start-up. The straw oxide finish provides light lubricity and surface protection during use. At 1.8125 inches overall length with a 0.8594-inch flute, it fits standard drill chucks and benchtop drill presses used daily by machinists, maintenance technicians, and metalworking tradespeople.

This drill bit is intended for production and maintenance drilling in ferrous metals, non-ferrous metals, and select engineered materials, consistent with its P, M, K, N, and S material codes per DIN classification. The straight cylindrical shank and 1.80 mm diameter suit precision drilling tasks where small-diameter accuracy matters. Web-thinned construction reduces thrust load, making it effective in handheld drill motors and drill press setups alike. The Series 2ACO designation identifies this as a heavy-duty grade bit within the Precision Twist Drill line.

Key Features

• Cobalt HSS construction for improved heat and wear resistance in steel drilling applications
• 135-degree split point reduces drill walk and lowers required feed pressure
• Straw oxide finish provides surface lubricity and corrosion resistance
• Web-thinned, tapered web configuration reduces cutting thrust
• Two regular spiral flutes for efficient chip evacuation
• Conforms to DIN 338 and ANSI standards for dimensional consistency

Compatibility

Designed as a general-purpose jobber drill suitable for drilling steel, cast iron, aluminum, and similar materials in applications requiring a 1.80 mm diameter hole with a straight-shank drill bit.

Installation Notes

Installation and use of this drill bit should follow standard machine shop safety practices. Secure the workpiece before drilling and ensure the chuck is properly tightened on the straight shank before operation. Always wear appropriate eye protection and observe safe RPM ranges for the diameter and material being drilled. Replace the bit when cutting edge wear causes increased thrust force or produces oversized holes.