Drill America Cobalt Drill Bit Set for Metalwork

The Drill America 29-piece 135-degree split point heavy-duty drill bit set comes packaged in a metal case. Manufactured to the National Aerospace standard 907, these drill bits display high red hardness, allowing for speeds up to 30% greater than those achievable with conventional M2 High-Speed Steel. They are particularly effective in drilling tough, high-tensile-strength materials such as stainless steel, inconel, and titanium.

The 135-degree split point design is self-centering and reduces thrust, enhancing the overall performance of the drill bits. Cobalt steel tools, similar to high-speed steel, contain a higher cobalt content, providing improved performance when cutting harder metals like stainless steel or nickel alloys.

The gold oxide surface treatment used on these tools is a thinner oxide layer compared to the more commonly used black oxide, but the performance of the tools is similar to that of uncoated tools. The round shanks of the drill bits allow for use with a wide variety of tool-holding systems.

When operated in a counterclockwise direction (right-hand cut), the spiral-fluted design of the tools effectively evacuates chips up and out of the cut, reducing the risk of clogging. This feature contributes to the overall efficiency and effectiveness of the drilling process.

In summary, the Drill America 29-piece 135-degree split point heavy-duty drill bit set is a versatile and high-performance tool, suitable for a range of applications, particularly in the drilling of tough, high-tensile-strength materials. The set comes packaged in a durable metal case for convenient storage and transportation.

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