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The EAGLE CUTTING TOOL C304-135-D is a size 35 cobalt jobber-length drill bit manufactured in the USA. Cobalt construction provides increased heat resistance and hardness compared to standard high-speed steel, making it well suited for drilling through tough materials including stainless steel, cast iron, hard alloys, and other abrasion-resistant metals. The jobber-length geometry delivers a balanced combination of reach and rigidity for general-purpose drilling applications. This bit is used by machinists, pipefitters, electricians, HVAC technicians, and plumbers who require a reliable, durable drill for production or field work.
The C304-135-D is appropriate for both shop and field use wherever a size 35 drill is called out. Typical applications include drilling pilot holes, clearance holes, and tap drill holes in metal fabrication, mechanical assembly, and service work. Its cobalt composition makes it a preferred choice when drilling harder base metals or when extended bit life is needed in high-cycle production environments.
Designed as a standard wire-gauge jobber drill for use in any 3-jaw chuck or compatible drill press, hand drill, or CNC setup accepting standard jobber-length shanks at size 35 diameter.
Secure the bit firmly in the chuck before use and verify the work piece is clamped or fixtured to prevent movement. Use appropriate cutting fluid or lubricant when drilling hard metals to extend bit life and improve hole quality. Always wear eye protection and follow applicable shop safety standards when operating drilling equipment. Inspect the cutting edges for wear or chipping before each use and replace the bit if the cutting geometry is compromised.
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