Cleveland C04439 Drill Bit Wire 27 0.1440 in Hss 118 Pt

Product Description

The CLEVELAND C04439 is a screw machine length (stub length) drill bit designed for high-volume drilling in tight-clearance applications where a standard-length bit would be impractical. Ground from high-speed steel (HSS) with a bright, uncoated finish, this bit carries a 118-degree standard point angle and a web-thinned tip that reduces thrust and improves centering on entry. The wire gauge size is 27, corresponding to a decimal diameter of 0.1440 inches. With an overall length of 2.0625 inches and a flute length of 1.0 inch, it is built for use in drill presses, screw machines, and CNC turret setups where compact tooling is required.

This bit is intended for general-purpose drilling in alloy steels and aluminum in both production shop and maintenance environments. The short flute and rigid body make it well suited to automatic screw machine work, turret lathes, and bench drill press operations where lateral deflection must be minimized. The straight cylindrical shank with a diameter of 0.1440 inches seats directly into standard drill chucks or collets. It conforms to ASME B94.11M and ANSI specification requirements, making it appropriate for shops with documented tooling standards.

Key Features

• Wire size 27 with a decimal diameter of 0.1440 inches for consistent, repeatable hole sizing
• 118-degree standard point angle with web thinning reduces entry thrust and improves self-centering
• High-speed steel construction provides adequate hardness and toughness for general-purpose production drilling
• Short screw machine length body (2.0625 inches overall) increases rigidity and reduces deflection versus jobber-length bits
• Bright, uncoated finish compatible with cutting fluids and oils without adhesion concerns
• Right-hand spiral flutes with regular helix promote efficient chip evacuation in alloy and aluminum workpieces

Compatibility

Designed for use in screw machines, turret lathes, drill presses, and CNC machining centers requiring a straight-cylindrical shank stub-length drill bit in wire size 27. Primary workpiece materials listed are alloy steel and aluminum.

Installation Notes

Installation is performed by machinists and toolroom technicians. Secure the straight shank fully into the chuck or collet before operation and verify concentricity to minimize runout. Always bring the spindle to full operating speed before contact with the workpiece, and apply a suitable cutting fluid when drilling alloy steel to extend tool life. Inspect the cutting edges for wear between production runs; a dull tip on a short bit accelerates heat buildup and can cause oversized holes.