Precision Twist Drill 6000542 Cobalt Jobber Drill 7.25mm

Product Description

The PRECISION TWIST DRILL 6000542 is a cobalt jobber-length drill bit designed for heavy-duty drilling in steel and other demanding workpiece materials. Built to DIN 338 and ANSI standards, it features a 135-degree split point that reduces walking on contact and lowers thrust requirements at the start of a cut. The straw oxide finish provides mild lubricity and corrosion resistance. With a 7.25 mm diameter, a flute length of 2.719 inches, and an overall length of 4.297 inches, this bit fits standard jobber-length applications where a straight cylindrical shank and regular spiral flute are the go-to configuration.

This drill bit is suited for general-purpose metal drilling in fabrication shops, maintenance and repair operations, and trade work involving ferrous and non-ferrous stock. Primary workpiece material classifications include steel, stainless, cast iron, non-ferrous metals, and high-temperature alloys. The web-thinned, tapered-web geometry reduces cutting resistance in harder materials. Right-hand cutting direction is standard for use with conventional drill presses, hand drills, and magnetic base drills.

Key Features

• Cobalt high-speed steel construction for heavy-duty drilling in steel and hard alloys
• 135-degree split point reduces bit walking and lowers entry thrust
• Straw oxide finish provides lubricity and mild corrosion resistance
• Web-thinned, tapered-web design reduces cutting resistance in dense materials
• DIN 338 and ANSI compliant for consistent dimensional tolerancing
• Regular spiral flute with 10xD flute-to-diameter ratio for efficient chip evacuation

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with standard straight-shank chucks on drill presses, hand drills, and magnetic base drills accepting a 7.25 mm or 0.2854 inch shank diameter. Suitable for workpiece material classifications P, M, K, N, and S per ISO designation.

Installation Notes

Secure the shank fully in the chuck and verify concentricity before beginning a cut. Use cutting fluid or coolant when drilling steel to extend bit life, noting this bit does not support coolant-through delivery. Do not exceed the maximum drilling depth of 2.717 inches without withdrawing to clear chips. Replace or resharpen when thrust requirements increase noticeably or finish quality degrades.