Cleveland C14203 Cobalt Screw Machine Drill Bit 7/64 in

Product Description

The CLEVELAND C14203 is a cobalt screw machine length drill bit designed for high-speed drilling in tough materials. Built to ASME B94.11M standards, it features a 135-degree split point that reduces walking and allows self-starting without a center punch. The parabolic flute geometry improves chip evacuation and reduces heat buildup during extended cuts. At 1-13/16 inches overall length with a 7/64-inch (0.1094-inch) diameter, this stubby format provides rigidity ideal for tight-clearance applications. Manufactured from M42 cobalt high-speed steel, it holds an edge longer than standard HSS bits when drilling alloy steels, stainless, and harder aluminum alloys. Licensed machinists, toolroom techs, and production floor operators are the primary users.

This bit is suited for screw machine operations, CNC drilling fixtures, drill press work, and hand-held drilling in constrained spaces where a jobber-length bit would flex or chatter. The shortened overall length reduces deflection in interrupted cuts or cross-drilled holes. Primary workpiece materials listed by the manufacturer include alloy steel and aluminum. The straight-cylindrical shank seats directly in standard drill chucks without adapters, making it compatible with a wide range of machine tool setups on the shop floor or in field fabrication work.

Key Features

• M42 cobalt steel construction for heavy-duty drilling in alloy and aluminum workpieces
• 135-degree split point reduces thrust force and eliminates center-punch requirement
• Parabolic flute profile improves chip flow and reduces heat in deep holes
• Web-thinned parallel web design lowers cutting resistance at the chisel edge
• Screw machine length (1-13/16 inches OAL) provides rigidity in tight-clearance setups
• Diameter tolerance held to +0.0000 to -0.0005 inches for consistent hole sizing

Compatibility

Designed as an OEM-style replacement or direct drop-in for screw machine and short-length cobalt drill bit applications in standard straight-shank drill chucks across benchtop drill presses, CNC machines, and hand drills.

Installation Notes

Secure the shank fully in the chuck and verify concentricity before running the spindle. Always wear appropriate eye protection and ensure the workpiece is clamped or fixtured before drilling. Follow your facility or shop safety procedures and applicable OSHA machine guarding requirements when operating drill presses or CNC equipment. Disconnect or lock out power to the machine before changing bits.