Drill America D/A29S-CO-SET 29 Piece M42 Cobalt Screw Machine Drill Bit Set

The Drill America 29-piece 135-degree split point heavy-duty drill bit set, manufactured to the National Aerospace Standard 907, is designed to cater to a wide range of drilling needs. These drills are self-centering and reduce thrust, making them ideal for both portable and machine drilling applications.

The short, rugged construction of the drill bits ensures reliable performance across a broad range of materials, including the iron and steel families. Screw machine drills, commonly used in the automotive and construction industries, are particularly well-suited for setups where spindle clearance is limited.

Sizes smaller than #52 feature the standard 118-degree point, while the cobalt steel tools, similar to high-speed steel, offer enhanced performance when cutting harder metals such as stainless steel or nickel alloys. The gold oxide surface treatment, which is thinner than the typical black oxide, provides a finish that is comparable to uncoated tools in terms of performance.

The round shanks of the drill bits allow for compatibility with a wide variety of toolholding systems, ensuring versatility and ease of use. When operated in a counterclockwise direction (right-hand cut), the spiral-fluted tools efficiently evacuate chips from the cut, reducing the risk of clogging.

The 29-piece set includes fractional sizes ranging from 1/16" to 1/2", with 1/64" increments, catering to a diverse range of drilling requirements. The tools are conveniently packaged in a sturdy metal case, ensuring easy storage and transportation.

In summary, the Drill America 29-piece 135-degree split point heavy-duty drill bit set is a comprehensive solution for professionals and hobbyists alike, combining advanced features, versatility, and durability to tackle a wide range of drilling tasks with precision and efficiency.

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