14.00mm Cobalt Metric Drill Bit with 1/2 Shank

These cobalt steel drill bits are made of heat-resistant cobalt and ground to a heavy-duty 135-degree split point. They feature a common flute design and overall length, allowing for minimal adjustment during tool changes. The precision grinding ensures a high degree of concentricity between the shank and body diameter, making them ideal for drilling in tough, high-tensile-strength materials.

The size range capacity of a portable drill chuck can be expanded by using these drill bits. Their common flute and overall length design also contributes to minimal adjustment requirements during tool changes. Precision grinding ensures a high degree of concentricity between the shank and body diameter, making these drill bits suitable for drilling in low and medium-tensile-strength materials as well.

Cobalt steel tools, such as these, are similar to high-speed steel, but with more cobalt added for improved performance when cutting harder metals, including stainless steel or nickel alloys. The gold oxide surface treatment is thinner than the typical black oxide, and it serves to identify the cobalt steel composition, while the performance remains similar to that of uncoated tools.

The round shanks on these drill bits allow for use with a wide variety of toolholding systems. When run in a counterclockwise direction (right-hand cut), the spiral fluted design helps to evacuate chips up and out of the cut, reducing the risk of clogging.

These drill bits are manufactured to the National Aerospace Standard 907, ensuring their quality and reliability. The combination of their heat-resistant cobalt construction, precision grinding, and specialized features makes them well-suited for demanding drilling applications in tough materials.

In summary, these cobalt steel drill bits offer a range of beneficial characteristics, including heat resistance, precision concentricity, and efficient chip evacuation, making them an excellent choice for a variety of drilling tasks, particularly in challenging high-tensile-strength or harder metal materials. Their compliance with the National Aerospace Standard 907 further underscores their reliability and suitability for critical applications.

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