Chicago-latrobe 50079 Cobalt Drill Bit 37/64 Inch 135 Deg

Product Description

The CHICAGO-LATROBE 50079 is a cobalt jobber-length drill bit engineered for high-performance drilling in hard and abrasive materials. Built to M42 cobalt steel grade, it carries a gold oxide coating that improves lubricity and heat resistance during extended cuts. The 135-degree split point reduces walking and requires no center punch on most surfaces. At 6-5/8 inches overall length with a 4-13/16-inch flute length, this bit is sized for general-purpose jobber work on the drill press or hand-held power drill. Machinists, fabricators, and maintenance technicians working in metalworking environments are the primary users of this series.

The 50079 is rated for drilling titanium as its primary workpiece material, making it a practical choice for aerospace, medical fabrication, and precision machining applications where standard HSS bits fail prematurely. The 37/64-inch diameter with a straight-cylindrical shank fits standard drill chucks without adapters. The spiral flute with regular helix and web-thinned, tapered web configuration promotes chip evacuation and reduces torque in deep-hole applications. This bit meets DIN 338 and NAS 907 Type J standards, which are recognized specifications in aerospace and defense manufacturing environments.

Key Features

• M42 cobalt steel construction for durability in hard metals including titanium
• 135-degree split point reduces thrust and eliminates center-punch requirement on most workpieces
• Gold oxide coating improves surface lubricity and extends tool life under heat
• Web-thinned, tapered web reduces cutting resistance in deep-hole operations
• Meets DIN 338 and NAS 907 Type J standards for aerospace-grade tooling
• Straight-cylindrical shank fits standard 3-jaw drill chucks without modification

Compatibility

Designed for use in standard drill presses and hand-held power drills accepting a 37/64-inch straight-cylindrical shank. Primary workpiece material is titanium; also suited for other hard alloys and ferrous metals consistent with M42 cobalt tooling applications.

Installation Notes

Installation and use should be performed by machinists or qualified tradespeople familiar with metal-cutting operations. Secure the workpiece firmly before drilling and confirm the chuck is tightened to the shank before operation. Use appropriate cutting fluid or coolant when drilling titanium or other hard alloys to preserve tool life, as this bit does not support through-coolant delivery. Follow all applicable shop safety procedures and machine guarding requirements.