#1 5/64" LH COBALT DRILL BIT - Hanson

The Hanson 30505ZR #1 5/64" LH Cobalt Drill Bit is engineered for professional technicians and mechanics tackling demanding drilling applications. Constructed from M-42 8 percent cobalt high-speed steel, this drill bit delivers exceptional abrasive resistance, making it ideal for penetrating tough and high tensile strength metals common in automotive and industrial settings. Its left-hand rotation is particularly beneficial for specialized tasks like freeing broken fasteners.

Key Features

• M-42 8% Cobalt Construction: Provides superior hardness and heat resistance, ensuring extended tool life and performance in challenging materials.
• Heavy-Duty Spiral Flute: Designed for efficient and rapid chip ejection, minimizing clogging and heat buildup during continuous use.
• Shorter Cutting Lips: Reduces torque requirements, allowing for smoother drilling and enhanced control when working with high tensile strength materials.
• 135-Degree Split Point: Facilitates quick and easy penetration without the need for pilot holes, while also preventing work hardening and bit walking.
• Left-Hand (LH) Rotation: Specifically designed for counter-clockwise drilling, making it an essential tool for effective screw and bolt extraction.

Applications

This professional-grade drill bit is an indispensable tool for a range of automotive and industrial applications. It excels in drilling through resilient alloys, stainless steel, and other hardened metals often encountered in engine bays, machinery repair, and fabrication. Its left-hand design makes it particularly effective when paired with screw extractors, allowing technicians to drill out broken fasteners while simultaneously applying a loosening torque, thereby streamlining complex removal processes in vehicle maintenance and industrial equipment repair.