Precision Twist Drill 5995620 Cobalt Drill Bit Set 29 Pc

Product Description

The PRECISION TWIST DRILL 5995620 is a 29-piece cobalt jobber length drill bit set covering sizes from 1/16 inch to 1/2 inch in 1/64-inch step increments. Each bit is ground to a 135-degree split-point angle, which reduces walking on contact and allows drilling to start without a center punch on most metalworking applications. The cobalt tool material resists heat buildup at higher cutting speeds, making this set well suited for stainless steel, hardened alloys, and other tough materials. Bits carry a gold finish and feature straight shanks. The set meets ANSI and NAS 907 specification designations and is marketed as a heavy-duty metalworking solution for trade professionals.

This set is intended for metalworking and multipurpose drilling in maintenance, repair, and fabrication environments. The 29-piece range covers the most common fractional inch drill sizes encountered in mechanical and industrial work. The included plastic storage case keeps bits organized and protected between jobs. Machinists, millwrights, pipefitters, and general maintenance technicians working with metal stock, structural members, or equipment frames will find this set covers the majority of everyday hole sizes without switching to a separate set.

Key Features

• 29-piece set covering 1/16 inch through 1/2 inch in 1/64-inch increments
• Cobalt tool material for heat resistance when drilling hardened and stainless alloys
• 135-degree split-point tip reduces bit walking and lowers required feed pressure
• Straight shank compatible with standard drill chucks
• Gold finish for visual identification and added surface protection
• Meets ANSI and NAS 907 specification standards
• Includes plastic storage case for organized jobsite or shop storage

Compatibility

Designed for use in standard drill chucks accepting straight-shank fractional inch jobber length drill bits in metalworking and multipurpose applications.

Installation Notes

Installation is performed by machinists, millwrights, pipefitters, or maintenance technicians using standard drill presses, magnetic drills, or handheld power drills with a keyed or keyless chuck. Secure the workpiece before drilling and confirm the chuck is fully tightened on the shank before operating. Use appropriate cutting fluid or coolant when drilling hardened materials to extend bit life. Inspect each bit for damage before use and replace any bit showing signs of tip deformation or cracking.