Cleveland C70209 Jobber Drill Bit Wire 76 Cobalt

Product Description

The CLEVELAND C70209 is a cobalt jobber length drill bit in wire gauge size 76, with a decimal diameter of 0.0200 inches. Built from M42 cobalt high-speed steel and finished with a gold oxide coating, it is engineered for heavy-duty drilling applications where heat resistance and edge retention matter. The bit features a 135-degree split point for fast starts without center punching and a web-thinned, tapered web design that reduces thrust on entry. With a regular spiral flute and right-hand cut, it is a dependable choice for production or maintenance drilling work performed by machinists, HVAC fabricators, and general trade technicians.

This bit is rated for use on aluminum as the primary workpiece material and conforms to NAS 907 Type J standards, making it suitable for aerospace and precision manufacturing environments as well as general trade applications. The straight-cylindrical shank with a 0.0200-inch diameter fits standard drill chucks without adapters. The overall length of 7/8 inches and flute length of 3/16 inches place this in the small-diameter, short-body category appropriate for tight-clearance or pilot-hole work.

Key Features

• M42 cobalt steel construction for heat resistance and extended tool life in tough materials
• 135-degree split point eliminates the need for center punching and reduces walking on entry
• Gold oxide coating provides lubricity and corrosion resistance during drilling
• Web-thinned tapered web reduces axial thrust and improves chip evacuation
• Right-hand spiral flute with regular helix for efficient chip removal
• Meets NAS 907 Type J specification for use in precision and aerospace-adjacent applications

Compatibility

Designed as an OEM-style replacement or standard-service drill bit for use in any drill chuck accepting a 0.0200-inch straight-cylindrical shank, consistent with wire gauge size 76 tooling setups.

Installation Notes

This bit is installed and operated by machinists, HVAC sheet metal fabricators, and trade technicians using handheld or drill-press equipment. Ensure the chuck is fully tightened and the work piece is secured before operation. Use appropriate cutting fluid or coolant when drilling metals to prolong bit life, even though this bit does not support through-coolant delivery. Inspect the cutting edges before each use and replace if chipping or dulling is observed, as undersized wire gauge bits are susceptible to breakage under side load.