Mountain 9/64" Cobalt Drill Bit - Mountain

The Mountain 55609 9/64" Cobalt Drill Bit is engineered to meet the demanding requirements of professional automotive and industrial environments. Crafted from premium cobalt steel, this robust drill bit offers enhanced durability and superior heat resistance, providing reliable and consistent performance when drilling through exceptionally hard materials. It serves as a dependable tool for technicians and mechanics facing challenging drilling applications.

Key Features

• Premium Cobalt Steel Construction: Manufactured from high-grade cobalt steel (typically M35 or M42 with 5-8% cobalt), this bit delivers enhanced strength and wear resistance, contributing to an extended tool life in rigorous professional settings.
• 135° Split Point Design: The self-centering 135° split point allows for immediate penetration without the need for a pilot hole, effectively preventing "walking" on starting surfaces and ensuring precise hole placement.
• High Heat Resistance: Engineered to maintain sustained cutting performance by efficiently dissipating heat generated during demanding drilling operations, which helps prevent overheating and premature dulling of the cutting edge.
• Aerospace NAS907-J Compliant: Meets stringent aerospace NAS907-J specifications, ensuring a high standard of quality, precision, and reliability for critical applications, including those within military and commercial aviation.
• Made in the USA: Proudly manufactured in the USA, reflecting a commitment to quality craftsmanship and adherence to rigorous production standards.

Applications

This Mountain cobalt drill bit is specifically designed for efficiently drilling into extremely hard metals frequently encountered in professional workshops. It excels in materials such as various grades of stainless steel, cast iron, titanium, and other high-tensile alloys. This makes it an ideal tool for automotive repair, vehicle fabrication, and industrial maintenance tasks where standard high-speed steel bits may prove insufficient due to material hardness or excessive heat generation. Its robust construction provides a dependable solution for creating precise holes in chassis components, engine parts, and heavy machinery.