Chicago-latrobe 45010 Cobalt Jobber Drill Bit Size 40

Product Description

The CHICAGO-LATROBE 45010 is a cobalt jobber-length drill bit designed for high-performance drilling in hard and abrasive materials. Built to M42 cobalt steel material grade, this bit carries a TiAlN coating that extends tool life under heat-intensive cutting conditions. The 135-degree split point reduces walking on entry and requires no center punch on most surfaces. It runs a right-hand spiral flute with a straight-cylindrical shank at 0.0980 inches diameter and an overall length of 2-3/8 inches. The 1-3/8 inch flute length handles typical jobber-depth holes efficiently. This bit is sized to wire gauge 40 and is built for professional machinists and maintenance techs working with titanium and other difficult-to-machine materials.

The 45010 is suited for production and MRO drilling applications where standard HSS bits wear prematurely. Its primary workpiece material designation is titanium, making it a go-to choice in aerospace, medical, and precision manufacturing environments. The Series 550TA designation places it in a high-performance drill line built to DIN 338 and NAS 907 Type J standards. Installation is carried out in a drill press, CNC machining center, or handheld drill motor by a machinist or skilled maintenance technician. The web-thinned, tapered web configuration reduces thrust load and improves chip evacuation, which matters when drilling small-diameter holes at depth in tough alloys.

Key Features

• M42 cobalt steel construction handles elevated heat without losing hardness
• TiAlN coating extends tool life in titanium and high-temp alloy drilling
• 135-degree split point with web thinning reduces thrust and prevents walking
• Right-hand spiral flute with regular spiral type promotes consistent chip clearing
• Straight-cylindrical shank at 0.0980 inches fits standard chucks without adapters
• Meets DIN 338 and NAS 907 Type J standards for dimensional and performance compliance

Compatibility

Designed as a Series 550TA jobber-length replacement or stocking bit for applications requiring wire size 40 at 0.0980 inches diameter, conforming to NAS 907 Type J and DIN 338 specifications, with primary workpiece material designation of titanium.

Installation Notes

Installation and use should be performed by a qualified machinist or maintenance technician familiar with small-diameter drill bit handling. Secure the straight-cylindrical shank firmly in a properly sized chuck before operation to prevent slippage or bit breakage. Use appropriate cutting fluid or coolant compatible with the workpiece material to manage heat, even though this bit does not support coolant-through delivery. Inspect the cutting edges before each use — small-diameter cobalt bits are brittle and should be discarded if chipped rather than reground without proper equipment.