Eagle Cutting Tool S300-015-I Cobalt Jobber 15/64 in

Product Description

The EAGLE CUTTING TOOL S300-015-I is a 15/64-inch cobalt jobber-length twist drill designed for high-performance metal drilling in demanding trade and industrial applications. Cobalt construction provides superior heat resistance compared to standard high-speed steel, making it well-suited for drilling harder ferrous metals, stainless steel, and other tough alloys. The jobber-length geometry balances reach and rigidity, giving the installer consistent, accurate hole placement across a wide range of workpiece thicknesses. At 0.5 pounds, this is a compact, single-piece drill bit intended for use in standard drill chucks.

This cobalt jobber drill is used across mechanical, HVAC, plumbing, and electrical trades wherever metal-on-metal drilling is required. Typical applications include drilling pilot holes in structural steel, sheet metal framing, equipment enclosures, junction boxes, and pipe hangers. The 15/64-inch diameter is a common sizing used for bolt clearance and tapping preparation in light-gauge and medium-gauge steel assemblies in both residential and commercial construction environments.

Key Features

• 15/64-inch diameter cobalt construction for extended tool life in hard-metal drilling
• Jobber-length geometry provides balance between reach and drill rigidity
• Heat-resistant cobalt alloy suitable for stainless steel and hardened ferrous metals
• Single-piece design compatible with standard 3-jaw drill chucks
• Minimum order quantity of 1 — available as an individual unit

Compatibility

Designed as a standard jobber-length replacement drill bit for use in any 3-jaw chuck or drill press accepting a 15/64-inch shank diameter across trade and industrial drilling applications.

Installation Notes

This bit is installed and operated by qualified tradespeople including HVAC technicians, plumbers, electricians, and ironworkers. Secure the bit firmly in the chuck before operation and verify runout before drilling into finished workpieces. Use appropriate cutting fluid when drilling stainless steel or hardened alloys to extend bit life and reduce heat buildup. Follow applicable workplace safety standards and wear appropriate eye protection during all drilling operations.

Technical Specifications

• Diameter: 15/64 inches
• Drill Type: Jobber Length
• Material: Cobalt
• Weight: 0.5 pounds
• Minimum Order Quantity: 1

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: S300-015-I