Cleveland C14621 Cobalt Drill Bit 13/64 Inch 135 Point

Product Description

The CLEVELAND C14621 is a cobalt screw machine length drill bit designed for high-performance drilling in tough materials. With a 13/64 inch (0.2031 inch) diameter and a 135-degree split point, this bit delivers fast starts and reduced walking on hard surfaces without a center punch. The web-thinned geometry lowers cutting force and improves chip evacuation. The M42 cobalt steel construction provides heat and wear resistance beyond standard high-speed steel, making it a practical choice for production work in alloy steel, aluminum, and other demanding workpiece materials. Licensed machinists, tool-and-die techs, and maintenance mechanics working with metal fabrication regularly reach for this bit series.

The C14621 suits production drilling applications where short, rigid tooling improves accuracy in drill presses, lathes, and CNC machining centers. Its screw machine length keeps the bit compact for close-tolerance work in confined setups. Primary workpiece materials include alloy steel and aluminum. The straight-cylindrical shank fits standard drill chucks without adapters. This bit is built to Series 2133 specifications and conforms to ASME B94.11M and DIN 1897 standards, making it appropriate for shops that require certified tooling documentation.

Key Features

• 13/64 inch diameter with tight tolerance of +0.0000 to -0.0007 inches for precise hole sizing
• M42 cobalt steel construction for extended tool life in alloy steel and aluminum
• 135-degree split point for self-centering entry and reduced thrust force
• Web-thinned, parallel web design for lower cutting resistance and better chip flow
• Screw machine (stub) length for added rigidity in tight setups and drill press use
• Right-hand cut, 2-flute regular spiral configuration for general production drilling

Compatibility

Designed as a direct-fit replacement for standard straight-shank stub-length drill bits in the 13/64 inch diameter class. The 0.2031 inch straight-cylindrical shank seats in any standard drill chuck rated for that diameter range.

Installation Notes

Installation is performed by toolroom machinists or qualified maintenance personnel. Secure the shank fully in the drill chuck and verify runout before cutting. Ensure the workpiece is properly clamped before starting the spindle. Follow shop-standard speeds and feeds for cobalt tooling in the target material; excessive feed rate without coolant will shorten tool life even in cobalt grades.