Cleveland C71305 Jobber Drill Bit 10 Mm Hss Oxide

Product Description

The CLEVELAND C71305 is a jobber length drill bit designed for general-purpose metal drilling in professional trade and industrial applications. Built from high speed steel with an oxide finish, it measures 10 mm (0.3937 inches) in diameter and carries an overall length of 5.236 inches. The 118-degree standard point angle and web-thinned tip reduce entry force and improve centering on flat and curved surfaces. Two spiral flutes with a regular helix evacuate chips efficiently during drilling. This bit is sized and manufactured to ASME B94.11M and DIN 338 standards, making it a reliable option for machinists, maintenance technicians, and fabricators working with common metals and plastics.

The C71305 is suited for general-purpose drilling in ferrous metals, non-ferrous metals, and plastics across residential, commercial, and light industrial settings. It is commonly used in maintenance, repair, and operations (MRO) environments as well as production drilling where consistent hole quality is needed. The straight-cylindrical shank fits standard drill chucks without modification. Its 3.425-inch flute length accommodates drilling depth appropriate for its 4xD flute-to-diameter ratio, which suits most through-hole and blind-hole applications in this size range.

Key Features

• 10 mm (0.3937 inch) diameter with a tight tolerance of -0.0010 to 0.0000 inches for consistent hole sizing
• 118-degree standard point angle with web-thinned, tapered web for reduced thrust and improved self-centering
• High speed steel construction with oxide coating for surface protection and reduced friction
• Right-hand spiral flute with regular helix for efficient chip evacuation
• Straight-cylindrical shank fits standard 3-jaw drill chucks
• Meets ASME B94.11M and DIN 338 specifications for dimensional accuracy

Compatibility

Designed as a general-purpose jobber length drill bit compatible with standard drill chucks accepting a 0.3937-inch straight-cylindrical shank, suitable for use in benchtop drill presses, hand drills, and CNC drilling operations within the 0.3500 to 0.4000 inch (10.00 to 12.50 mm) drill bit size range.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance technicians familiar with drill press or hand-drill operation. Always power down and de-energize the drilling equipment before inserting or removing the bit from the chuck. Secure the workpiece firmly before drilling to prevent movement and ensure a clean, accurate hole. Follow applicable workplace safety standards and manufacturer recommendations for cutting speeds appropriate to the material being drilled.