Cleveland C14699 Cobalt Drill Bit Letter U 0.368 in

Product Description

The CLEVELAND C14699 is a screw machine length cobalt drill bit sized at Letter U (0.3680 inches) with a 135-degree split point and web-thinned geometry. Built from M42 cobalt high-speed steel, it delivers the heat and wear resistance needed for drilling alloy steels and aluminum in high-production environments. The stub-length body — 3.125 inches overall — provides added rigidity and reduced deflection compared to jobber-length bits, making it well suited for short-reach drilling operations on drill presses, lathes, and CNC machining centers. Licensed trades and machining professionals install this bit where precision entry and long tool life are priorities.

The C14699 is designed for use in screw machine and general production drilling applications. Its right-hand spiral flutes and parallel web configuration support efficient chip evacuation in alloy steel and aluminum workpieces. The straight cylindrical shank measures 0.3680 inches in diameter and 1.3125 inches in length, making it compatible with standard drill chucks and collet systems found in production shop environments. Heavy-duty grade construction supports interrupted cuts and demanding feed rates typical of metal fabrication work.

Key Features

• Letter U size — 0.3680 inches diameter — with a diameter tolerance of +0.0000 to -0.0010 inches
• M42 cobalt construction for high heat resistance during extended drilling cycles
• 135-degree split point with web thinning for fast, accurate penetration and reduced thrust
• Screw machine (stub) length at 3.125 inches OAL for increased rigidity and reduced deflection
• 1.8125-inch flute length supports adequate chip clearance in short-depth holes
• Meets ASME B94.11M and DIN 1897 standards; ANSI and DIN specification designation

Compatibility

Designed as a screw machine length replacement drill bit for production drilling in alloy steel and aluminum workpieces; fits any standard drill chuck or collet accepting a 0.3680-inch straight cylindrical shank.

Installation Notes

Installation of this drill bit is performed by qualified machinists or tooling technicians. Always ensure the drill press, lathe, or CNC spindle is fully stopped and de-energized before changing tooling. Secure the straight shank firmly in the chuck or collet to the manufacturer-specified clamping depth to prevent runout. Confirm correct spindle speed and feed rate for the target workpiece material before beginning a cut — cobalt bits tolerate higher heat but still benefit from appropriate cutting fluid application on alloy steel.