Cleveland C70127 Cobalt Jobber Drill Bit 10.2mm

Product Description

The CLEVELAND C70127 is a cobalt jobber-length drill bit designed for high-performance drilling in demanding shop and field environments. Built from M42 cobalt steel and finished with a gold oxide coating, this bit delivers elevated heat resistance and extended tool life compared to standard HSS alternatives. It measures 10.2 mm (0.4016 inches) in diameter with a 5.24-inch overall length and a 135-degree split point that reduces walking and cutting pressure at startup. The two-flute spiral design with a web-thinned, tapered web promotes efficient chip evacuation. Machinists, maintenance technicians, and fabricators working with aluminum and similar materials will find this bit well-suited to production drilling tasks.

This drill bit is rated as heavy duty and meets NAS 907 Type J standards, making it appropriate for aerospace-grade and precision fabrication applications. Its primary listed workpiece material is aluminum, though the M42 cobalt grade is broadly capable across a range of non-ferrous and ferrous stock. The straight-cylindrical shank (0.4016 inches diameter) fits standard three-jaw chucks and drill presses without adapters. The Series 2213 designation places it within CLEVELAND's heavy-duty cobalt line. It is sold individually and is suited for use on drill presses, lathes, and hand-held drilling equipment in machine shops, maintenance facilities, and fabrication environments.

Key Features

• M42 cobalt steel construction for extended tool life and heat resistance
• Gold oxide coating reduces friction and improves chip flow
• 135-degree split point minimizes walking and lowers thrust at entry
• Web-thinned, tapered web design improves chip evacuation in deep holes
• Meets NAS 907 Type J specification for precision and aerospace applications
• Right-hand spiral flute, regular helix — compatible with standard drilling equipment

Compatibility

Designed as a jobber-length replacement drill bit for use with standard three-jaw chucks and drill press spindles accepting a 0.4016-inch straight-cylindrical shank. Primary workpiece material rating is aluminum per the manufacturer specification.

Installation Notes

This drill bit is installed by machinists and maintenance technicians using standard drill presses, lathes, or hand-held drilling equipment. Secure the straight shank fully in the chuck and verify concentricity before operation. Always wear appropriate eye protection and ensure the workpiece is clamped or fixtured before drilling. Do not exceed the rated speed range for the workpiece material and bit diameter.