31/64" Cobalt Straight Shank Drill Bit - Hanson

The Hanson 63131 31/64" Cobalt Straight Shank Drill Bit is engineered for demanding applications in professional automotive and industrial settings. Its M-35 5% cobalt alloy construction provides superior heat and wear resistance, enabling technicians to efficiently drill through challenging materials such as stainless steel, hardened steel, and high-strength alloys where standard HSS bits often fall short. This professional-grade drill bit delivers reliable performance and extended service life for critical drilling tasks.

Key Features

• M-35 Cobalt Alloy Construction: Manufactured from M-35 5% cobalt high-speed steel, this drill bit provides exceptional heat and abrasive resistance for drilling through tough materials including stainless steel, cast iron, titanium, and hardened fasteners.
• Precision 31/64" Diameter: Precision-ground to a true 31/64" diameter, ensuring accurate and consistent hole sizes for precise fitment of bushings, sleeves, brackets, and custom fixtures.
• 135-degree Split Point: The 135-degree split point reduces feed pressure, allowing for easier penetration without causing work hardening of the material. This design also eliminates the need for a pilot hole.
• Optimized Drilling Performance: Features an optimized point and heavy-duty spiral flute design for efficient chip evacuation and reduced bit walking, promoting cleaner, more controlled drilling on both flat and curved surfaces.
• Extended Service Life: The cobalt composition and durable cutting geometry help maintain edge sharpness over time, reducing the need for frequent bit changeouts in fleet maintenance, engine work, and production drilling.

Applications

This drill bit is ideal for professional automotive repair and fabrication tasks, including drilling through brackets, crossmembers, engine plates, exhaust flanges, suspension hardware, and heavy-duty mounting points on passenger vehicles, light/medium-duty trucks, and fleet equipment. It is also well-suited for industrial settings and machine shops requiring precise 31/64" holes in steel, stainless steel, and cast materials for jigs, fixtures, and production runs.

Specifications

• Manufacturer: Hanson
• Model Number: 63131
• Nominal Diameter: 31/64 inch
• Shank Type: Straight
• Overall Length: 6.1 in
• Weight: 0.25 lb
• Package Dimensions: 6.1 x 0.6 x 0.6 in