Eagle Cutting Tool C304-143-D Cobalt Jobber Drill No. 43

Product Description

The EAGLE CUTTING TOOL C304-143-D is a No. 43 cobalt jobber-length drill bit manufactured in the USA. Cobalt construction provides increased heat and wear resistance compared to standard high-speed steel, making this bit well suited for drilling harder materials including stainless steel, cast iron, and hardened alloys. The jobber-length design delivers the standard reach-to-diameter ratio that machinists and tradespeople rely on for general-purpose drilling in both hand-held and machine applications. At 0.12 pounds, it is a lightweight, single-piece consumable tool kept on hand in tool kits and shop inventories.

This drill bit is used across a range of trade and industrial applications where a No. 43 diameter hole is required. Typical uses include tapping prep work, precision hole placement in metalworking, electrical and mechanical assembly drilling, and maintenance and repair operations. Cobalt grade bits are the preferred choice when working through materials that would quickly dull standard twist drills. This bit is appropriate for use in drill presses, milling machines, and hand drills with a compatible chuck.

Key Features

• Cobalt construction for superior heat resistance and extended tool life in hard materials
• No. 43 jobber-length sizing for standard general-purpose drilling applications
• USA manufactured to consistent dimensional tolerances
• Lightweight at 0.12 pounds for easy handling and transport
• Minimum order quantity of 1, available as a single unit

Compatibility

Designed as a general-purpose No. 43 cobalt jobber drill bit compatible with standard drill presses, milling machines, and hand drills fitted with a chuck sized to accept the corresponding shank diameter.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists, electricians, plumbers, or mechanical tradespeople familiar with rotary cutting tools. Secure the bit firmly in the chuck and verify runout before drilling. Always wear appropriate eye protection and secure the workpiece before beginning a cut. Follow applicable workplace safety standards and equipment manufacturer guidelines for cutting speeds and feeds.

Technical Specifications

• Drill Size: No. 43
• Drill Type: Cobalt Jobber
• Country of Origin: USA
• Weight: 0.12 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: C304-143-D