Cleveland C14536 Screw Machine Drill Bit Size 47 Cobalt

Product Description

The CLEVELAND C14536 is a screw machine length drill bit designed for high-production drilling in metal fabrication and machining applications. Built from M42 cobalt high-speed steel, it handles demanding materials including alloy steels and aluminum without dulling prematurely. The bit features a 135-degree split point that self-centers on contact, reducing the need for a center punch and minimizing walking on hard surfaces. At 1.75 inches overall length with a 0.75-inch flute length, the stub-length body provides added rigidity and reduced deflection compared to jobber-length bits. Diameter tolerance is held to +0.0000 to -0.0005 inches, meeting ASME B94.11M standards.

This bit is sized to wire gauge number 47, equivalent to 0.0785 inches in decimal. Screw machine length drill bits are commonly used in drill presses, CNC machining centers, and turret lathes where short, rigid tooling is required to maintain hole accuracy in production runs. The straight cylindrical shank fits standard drill chucks and collet holders. Primary workpiece materials include alloy steel and aluminum, making this bit suited to automotive, aerospace, and general metalworking shops.

Key Features

• M42 cobalt construction for heat resistance and extended tool life in hard metals
• 135-degree split point reduces thrust and self-centers without a pilot hole
• Screw machine (stub) length body increases rigidity and reduces deflection
• Web-thinned parallel web geometry improves chip evacuation
• Right-hand cut with regular spiral flutes for standard CNC and manual machine use
• Diameter tolerance +0.0000 to -0.0005 inches per ASME B94.11M

Compatibility

Designed as a direct-fit replacement or production tooling choice for applications requiring a wire gauge number 47 drill diameter in screw machine length format; compatible with standard straight-shank drill chucks and collet systems accepting a 0.0785-inch shank.

Installation Notes

Installation is performed by machinists and tooling technicians in shop environments. Secure the shank fully in the chuck or collet and verify runout before beginning a production run. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain hole quality. Inspect the split point for chipping before each use, particularly when drilling hardened alloy steels.