9/64 X 2-7/8 In. Cobalt High-speed Drill Bit

Introducing the 9/64" x 2-7/8" Cobalt High‑Speed Steel Drill Bit, a precision‑engineered tool built for demanding metalwork. Crafted from alloyed high‑speed steel infused with 8% cobalt, this bit delivers superior rigidity and heat tolerance, allowing you to tackle tough materials without losing edge.

Why it matters: The advanced geometry cuts through hardened alloys faster, reducing operator fatigue and minimizing the risk of bit wander. Whether you are fabricating aerospace components or repairing heavy‑duty equipment, this drill bit maintains sharpness even at temperatures exceeding 1000°F.

• Cobalt‑Infused HSS Construction: Combines the durability of high‑speed steel with cobalt’s heat‑resistant properties for long‑lasting performance.
• 135° Split‑Point Tip: Provides immediate centering, eliminating walking and ensuring accurate start‑points on slick surfaces.
• Four Precision Cutting Edges: Increases material removal rate, delivering quicker hole creation in tough substrates.
• Optimized for Hard Metals: Ideal for drilling heat‑treated steel, stainless steel, chrome‑moly, manganese alloys, titanium, and even armor‑grade plates.
• Extended 2‑7/8" Shank Length: Offers deeper reach while maintaining steady torque transmission for demanding applications.

Final Thoughts: This cobalt‑enhanced drill bit stands out as a reliable workhorse for professionals who demand speed, accuracy, and durability. Its robust design resists overheating, cuts cleanly through the hardest alloys, and reduces tool change‑over time, making it an essential addition to any high‑performance toolset.