Cleveland C14813 Screw Machine Drill Bit 0.3346 in Cobalt

Product Description

The CLEVELAND C14813 is a screw machine length cobalt drill bit designed for high-performance drilling in demanding shop and field applications. Built to ASME B94.11M and DIN 1897 standards, this M42 cobalt heavy-duty bit measures 0.3346 inches in diameter with a 3.11-inch overall length. The 135-degree split point starts on contact without a center punch, reducing walking on hard or slippery surfaces. Web thinning lowers thrust requirements and improves chip evacuation. Licensed machinists, tool and die technicians, pipefitters, and mechanical contractors reach for cobalt-grade bits when carbon steel tools fall short on alloys and harder materials.

This bit is suited for drilling alloy steels, aluminum, and similarly tough workpiece materials in production machining, maintenance, and fabrication environments. The screw machine length profile — shorter than a jobber bit — provides greater rigidity in drill presses, turret lathes, CNC machining centers, and hand-held drill motors where stub length stability matters. The right-hand spiral flute geometry and parallel web configuration handle intermittent and continuous cuts in moderate to heavy stock removal scenarios.

Key Features

• M42 cobalt tool material rated for heavy-duty drilling in alloy and aluminum workpieces
• 135-degree split point with web thinning reduces walking and lowers feed pressure
• Screw machine (stub) length at 3.11 inches OAL improves rigidity over standard jobber bits
• Right-hand cut with regular spiral and 2-flute configuration for efficient chip removal
• Straight-cylindrical shank at 0.3346 inches diameter fits standard drill chucks without adapters
• Meets ASME B94.11M and DIN 1897 (ANSI and DIN) specifications for dimensional accuracy

Compatibility

Designed as a direct-fit replacement or standard addition for any drill chuck or holder accepting a 0.3346-inch straight-cylindrical shank, consistent with ASME B94.11M screw machine length tooling requirements.

Installation Notes

Installation and use should be performed by qualified machinists or tradespeople familiar with rotating cutting tool safety. Secure the shank fully in the chuck and confirm there is no runout before engaging the workpiece. Always power down and lock out the machine before changing bits. Use appropriate cutting fluid or coolant for the workpiece material to extend tool life and maintain dimensional tolerance.