Cleveland C72027 Jobber Drill Bit 27/64 Inch Hss

Product Description

The CLEVELAND C72027 is a jobber-length drill bit designed for general-purpose drilling in a wide range of materials. Manufactured from high speed steel (HSS) with a bright uncoated finish, this bit measures 27/64 inch (0.4200 inch decimal) in diameter and features a standard 118-degree drill point angle. The overall length is 5-3/8 inches, with a flute length of 3-15/16 inches and a straight-cylindrical shank. The two-spiral flutes use a regular helix with a tapered web and web-thinning for improved chip evacuation and reduced thrust at breakthrough. Machinists, pipefitters, and general trade technicians use this bit for layout and through-hole work in metal, plastic, and similar substrates.

The C72027 belongs to Cleveland Series 2002G and is built to ASME B94.11M and DIN 338 standards. It is suited for use in bench drill presses, hand drills, and magnetic-base drills in both shop and field settings. The straight-cylindrical shank seats in standard three-jaw chucks without modification. With a 4xD flute-to-diameter ratio and a shank diameter of 0.4219 inch, this bit handles the clearance and chip-load demands typical of jobber-length applications in light to medium-duty production and maintenance work.

Key Features

• 27/64 inch diameter (0.4200 inch decimal) with diameter tolerance of -0.0010 to 0.0000 inch
• 118-degree standard point angle with web-thinned, tapered web for reduced entry thrust
• High speed steel construction with bright uncoated finish
• Two spiral flutes, regular helix, 4xD flute-to-diameter ratio for efficient chip removal
• Straight-cylindrical shank, 0.4219 inch shank diameter, 1.4375 inch shank length
• Meets ASME B94.11M and DIN 338 standards; ANSI specification designation

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with any standard three-jaw chuck sized to accept a 0.4219-inch straight-cylindrical shank, suitable for bench drill presses, hand drills, and magnetic-base drills used in trade and production applications.

Installation Notes

Installation is performed by machinists, pipefitters, or maintenance technicians using a standard three-jaw drill chuck. Secure the shank fully in the chuck before operation and confirm the bit runs true before contact with the workpiece. Always power down and de-energize the drill press or tool before bit changes. Use appropriate cutting fluid for metal drilling to extend bit life and maintain dimensional tolerance.