Cleveland C14255 Screw Machine Drill Bit Cobalt 135

Product Description

The CLEVELAND C14255 is a cobalt screw machine length drill bit designed for high-performance drilling in demanding production and maintenance environments. Built to ASME B94.11M standards from M42 cobalt high-speed steel, this heavy-duty bit carries a wire gauge size 15 diameter of 0.1800 inches and an overall length of 2-3/16 inches. The 135-degree split point reduces walking on contact and lowers thrust force, while the parabolic flute geometry promotes efficient chip evacuation. It is sold individually and suits HVAC, mechanical, plumbing, and general trade applications where stub-length rigidity and cobalt heat resistance are required.

This bit is used in screw machine operations and short-reach drilling applications where a standard-length bit would flex or deflect. The reduced overall length of 2-3/16 inches provides added rigidity when drilling through alloy steel, aluminum, and other demanding workpiece materials. It is appropriate for residential and commercial mechanical trades, fabrication shops, and field service technicians requiring a dependable stub-length cobalt drill for tight-clearance or high-cycle work. The straight cylindrical shank seats in standard drill chucks without additional adapters.

Key Features

• M42 cobalt construction rated for heavy-duty drilling in alloy steel and aluminum
• 135-degree split point reduces thrust and prevents bit walking on hard surfaces
• Parabolic flute design with web thinning and parallel web configuration for efficient chip removal
• Screw machine (stub) length at 2-3/16 inches overall provides superior rigidity over jobber-length bits
• Straight cylindrical shank at 0.1800 inches diameter fits standard three-jaw drill chucks
• Diameter tolerance held to +0.0000 to -0.0007 inches per ASME B94.11M and ANSI specification

Compatibility

Designed as a direct-fit replacement or standard selection for any application requiring a wire size 15 screw machine length drill bit with a straight cylindrical shank. Compatible with alloy steel and aluminum workpiece materials as specified by the manufacturer.

Installation Notes

Installation is performed by machinists, fabricators, and trade technicians using any standard drill press, hand drill, or screw machine equipped with a compatible chuck. Secure the shank fully in the chuck jaws before operation to prevent slippage. Inspect the cutting edges for wear or chipping before each use, and replace the bit if the point geometry is compromised. Use appropriate cutting fluid when drilling alloy steel to extend tool life and maintain dimensional accuracy.