Step Drill Bit - Fractional/Self-Starting 12 Holes 3/16 - 7/8 In - Unibit

The Unibit UN4 Step Drill Bit is an essential tool for professional technicians and mechanics who demand precise and efficient hole drilling across various automotive and industrial materials. This self-starting tool integrates 12 common fractional drill sizes, ranging from 3/16 inch to 7/8 inch, into a single durable bit, effectively streamlining workflows by minimizing the need for frequent tool changes and accelerating project completion.

Key Features

• Self-Starting Design: Allows for immediate drilling upon contact with the workpiece, eliminating the need for a pilot hole and optimizing workflow efficiency.
• Versatile Fractional Sizing: Offers 12 distinct steps from 3/16" to 7/8", providing precise hole diameters for specific fittings and applications without requiring multiple bit changes.
• Integrated Deburring Edge: Automatically deburrs holes as the bit progresses through the material, ensuring clean, finished edges in a single operation.
• Single-Flute Geometry: Promotes effective chip evacuation and maintains clear visibility of the cutting edge, contributing to cleaner cuts, reduced chatter, and extended tool longevity.
• Professional-Grade Durability: Constructed from high-speed steel to withstand the rigorous demands of professional use, ensuring consistent performance in challenging environments.

Applications

This versatile Unibit step drill bit is ideal for creating accurate holes in materials such as sheet metal, plastics, wood, and composite materials frequently encountered in professional settings. It is well-suited for a variety of applications, including:

• Electrical Installations: Creating clean, precise conduit knockout holes in electrical panels and junction boxes.
• HVAC System Fabrication: For modifications and custom installations on ductwork and panels.
• Plumbing Projects: Requiring specific pipe sizing and access holes.
• Automotive Repair and Customization: For precise modifications or installations on various vehicle types, including chassis work, body panel adjustments, and sound system installations.
• General Fabrication and Shop Tasks: An essential tool for a wide range of workshop requirements, including enlarging existing holes.

Specifications

• Model Number: UN4
• Manufacturer: Unibit
• Drill Sizes: 3/16 inch to 7/8 inch in 12 fractional increments
• Weight: 0.2 lbs
• Dimensions: 5.6 x 2.5 x 0.4 inches
• Type: Self-Starting Step Drill Bit