Cleveland C14812 Cobalt Screw Machine Drill Bit 0.315 in

Product Description

The CLEVELAND C14812 is a cobalt screw machine length drill bit designed for high-performance drilling in demanding shop and field applications. Built to an overall length of 3.11 inches with a flute length of 1.457 inches, this bit delivers the rigidity needed for accurate hole placement without deflection. The 135-degree split point starts on contact without center-punching, reducing walking on hard materials. Constructed from M42 cobalt high-speed steel, the C14812 handles elevated heat generated when cutting alloy steels and aluminum without losing edge hardness. It is a heavy-duty grade tool suited for machinists, maintenance technicians, and fabricators who need consistent results in production or repair environments.

Screw machine length drill bits are the go-to choice when stub rigidity is required in drill presses, CNC machining centers, lathes, and hand-held power drills working in tight clearances. The C14812 is rated for alloy steel and aluminum as primary workpiece materials, making it appropriate for HVAC bracket fabrication, structural steel maintenance, and general metalworking tasks. The straight cylindrical shank with a diameter of 0.315 inches seats securely in standard three-jaw chucks and collet systems without requiring a specialized holder.

Key Features

• M42 cobalt steel construction resists heat buildup during high-speed cutting in alloy and aluminum stock
• 135-degree split point initiates cutting on contact, eliminating center-punch prep on most metals
• Web-thinned parallel web geometry reduces thrust load and improves chip clearance
• Screw machine length body provides added rigidity compared to jobber-length bits, reducing deflection
• Right-hand spiral flutes with regular helix promote efficient chip evacuation
• Meets ASME B94.11M and DIN 1897 standards for dimensional consistency
• Diameter tolerance of +0.0000 to -0.0010 inches ensures precise, repeatable hole sizing

Compatibility

Designed as an OEM-style replacement or direct-use screw machine length drill bit for standard three-jaw chucks and collet holders accepting a 0.315-inch straight cylindrical shank, compatible with drill presses, CNC machining centers, lathes, and hand-held power drills.

Installation Notes

Installation is performed by machinists and maintenance technicians using standard drill press, lathe, or hand-held drill equipment. Secure the shank fully in the chuck or collet before operation and verify runout before drilling into workpiece material. Coolant-through is not supported on this bit, so apply cutting fluid externally when drilling alloy steel to extend edge life. Always wear appropriate eye protection and follow applicable shop safety protocols when operating rotary cutting tools.