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The EAGLE CUTTING TOOL C304-137-D is a size 37 cobalt jobber-length drill bit manufactured in the USA. Cobalt construction provides greater heat resistance and hardness compared to standard high-speed steel, making it suitable for drilling into harder workpiece materials including stainless steel, cast iron, and high-strength alloys. The jobber-length geometry offers a balanced reach-to-rigidity ratio appropriate for general-purpose drilling in metalworking, maintenance, and fabrication applications. Machinists, pipefitters, and maintenance technicians keep cobalt jobber drills on hand as a reliable step up from standard HSS bits when material hardness demands it.
The C304-137-D is used in shop and field environments where drilling into ferrous metals, hardened steels, or abrasion-resistant materials is required. It fits standard drill chucks found on benchtop drill presses, hand-held power drills, and CNC drilling equipment. Size 37 wire gauge corresponds to a specific fractional diameter suited for clearance holes, tap-drill sizing, and precision hole preparation in metal fabrication and mechanical assembly work.
Designed as a general-purpose cobalt jobber drill suitable for use in standard drill chucks on drill presses, hand-held power drills, and CNC drilling equipment.
Secure the bit firmly in the drill chuck before operation and verify chuck key is removed prior to starting the machine. Use appropriate cutting fluid or lubricant when drilling hardened or stainless materials to extend bit life and maintain hole quality. Wear approved eye protection and follow applicable shop safety procedures during all drilling operations.
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