Cleveland C14620 Cobalt Screw Machine Drill Bit Size 7

Product Description

The CLEVELAND C14620 is a cobalt screw machine length drill bit designed for high-speed drilling in tough materials including alloy steels and aluminum. Built to ASME B94.11M standards and conforming to DIN 1897 and ANSI specifications, this M42 cobalt bit delivers the heat resistance and edge retention needed for production and maintenance drilling applications. Wire size 7 translates to a decimal diameter of 0.2010 inches with a tight tolerance of +0.0000 to -0.0007 inches. The 135-degree split point reduces walking and cutting pressure at the start of the cut, while the web-thinned, parallel-web geometry reduces thrust and improves chip evacuation.

The C14620 is suited for use in metalworking environments where standard HSS bits wear prematurely. It is a right-hand cut bit with a straight cylindrical shank, making it compatible with standard drill chucks and CNC tool holders alike. Typical applications include tapping pre-drill operations, fixture and jig work, and repetitive hole patterns in alloy steel and aluminum workpieces. The screw machine length keeps the bit stiff and accurate in short-reach drilling setups, making it a common choice for machinists and maintenance technicians working in production environments.

Key Features

• M42 cobalt construction provides heat resistance for drilling alloy steel and aluminum
• 135-degree split point reduces walking and lowers required thrust force
• Web-thinned parallel web geometry improves chip flow and reduces heat buildup
• Tight diameter tolerance of +0.0000 to -0.0007 inches for accurate hole sizing
• Screw machine (stub) length provides rigidity and reduced deflection in short-reach applications
• Conforms to ASME B94.11M, ANSI, and DIN 1897 standards

Compatibility

Designed as a heavy-duty OEM-style screw machine length drill bit for use in standard drill chucks and CNC tool holders accepting a straight cylindrical shank of 0.2010 inches. Suitable for drilling alloy steel and aluminum workpieces per Series 2133 specifications.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or maintenance technicians familiar with cutting tool safety. Secure the straight cylindrical shank firmly in the chuck or tool holder before operation, and verify chuck runout is within acceptable limits to maintain hole tolerance. Use appropriate cutting fluid or coolant for the workpiece material to extend tool life, noting this bit does not support through-coolant. Inspect the cutting edges for wear or chipping before each use and replace the bit if damage is observed.