Cleveland C02903 Jobber Drill Bit Wire 70 Hss

Product Description

The CLEVELAND C02903 is a jobber-length drill bit in wire gauge size 70, ground from high speed steel and finished with a bright uncoated surface. The bit measures 0.0280 inches in diameter with a 118-degree standard point angle and a fast spiral flute configuration. Overall length is 1.25 inches, with a flute length of 0.375 inches and a straight-cylindrical shank. The two-flute, right-hand cutting geometry delivers clean entry in small-diameter drilling applications. Web thinning reduces thrust requirements and helps center the point, making this bit suitable for precision work in tight tolerances. Typically installed by machinists, toolmakers, maintenance technicians, and trade professionals requiring small-diameter hole making.

This bit is rated for general-purpose drilling with a primary suitability for aluminum workpieces, though its high speed steel construction handles a range of softer metals and plastics at appropriate feed and speed settings. The straight-cylindrical shank fits standard drill chucks and collets sized for 0.0280-inch shanks. It is manufactured to ASME B94.11M standards and carries an ANSI specification designation, confirming dimensional compliance for toolroom and production environments.

Key Features

• Wire gauge size 70 — 0.0280 inch diameter, held to a tolerance of -0.0005 to 0.0000 inches
• 118-degree standard point angle with web-thinned, tapered web for reduced thrust
• Fast spiral flute promotes chip evacuation in aluminum and soft materials
• Bright uncoated finish — compatible with cutting fluids and standard lubricants
• Right-hand cut, two-flute geometry for clean hole entry
• Manufactured to ASME B94.11M; ANSI specification designation

Compatibility

Designed as a general-purpose jobber-length drill bit for use in standard drill chucks and collets accepting a 0.0280-inch straight-cylindrical shank, suitable for benchtop drill presses, CNC machining centers, and handheld drill motors.

Installation Notes

Installation and use of this bit should be performed by qualified machinists or trade technicians familiar with small-diameter tooling. Secure the shank fully in the chuck or collet before operation and verify runout before drilling. Use appropriate cutting fluid or lubricant for the workpiece material to extend tool life and maintain hole quality. Avoid excessive feed pressure on wire-gauge bits, as the small cross-section is susceptible to breakage under lateral load.