1/16" thru 15/16" Drill Bits

Fractional drill bits ranging from 1/16" through 15/16" are essential tools for automotive service professionals, body shops, and metal fabrication work. These bits are designed to create precise holes in a variety of materials including metal, wood, and plastic, with sizes progressing in standard fractional increments to meet diverse drilling requirements.

This category includes standard jobber length bits, reduced shank configurations for larger diameters, and specialty designs optimized for different drilling applications and materials.

Standard Jobber Length: These bits typically feature proportional lengths appropriate to their diameter and are suitable for general-purpose drilling applications. They commonly include 118-degree point angles for versatile use across wood, metal, and plastic.

Reduced Shank Bits: Larger diameter bits (generally above 1/2") often feature reduced shanks, commonly 1/2", allowing them to fit standard drill chucks while providing larger cutting diameters. These typically measure 6" in overall length and may include three-flatted shank designs for secure grip in keyless chucks.

Split Point vs. Conventional Point: Split point designs, often with 135-degree angles, help minimize bit "walk" and begin drilling immediately without requiring center punching. Conventional points may be found on some larger diameter bits and general-purpose applications.

High Speed Steel (HSS) Grades: Drill bits in this category are commonly manufactured from various HSS grades including M-2 and M-7 molybdenum high speed steel. M-2 provides a balanced combination of strength, heat resistance, and wear resistance for general applications. M-7 formulations typically offer higher vanadium content and increased abrasion resistance for demanding drilling tasks.

Cobalt-Enhanced Bits: Some bits feature 5% cobalt content, which enhances heat and abrasion resistance, making them particularly suitable for drilling harder materials and extended use in production environments.

Surface Treatments: Various finishes including black oxide, bright finish, and salt nitride treatments may be applied. These coatings can improve hardness, reduce friction, and extend tool life depending on the application.

Automotive and Body Shop Work: Heavy-duty drilling in chassis components, frame repairs, and body panel work typically requires robust bit construction with enhanced heat resistance. Cobalt-enhanced bits and heavy-duty web construction provide the durability needed for these applications.

Metal Fabrication: When drilling through steel, aluminum, or alloy materials, consider bits with split point geometry for immediate engagement and reduced walking. Three-flatted shanks provide better grip when using portable drills or keyless chucks.

Multi-Material Use: For shops working with diverse materials, standard 118-degree point bits offer versatility across wood, metal, and plastic applications.

Chuck Compatibility: Verify your drill chuck capacity before selecting bits, especially for larger diameters. Reduced shank bits are designed specifically to accommodate larger cutting diameters in standard 1/2" chucks.

• Always wear appropriate personal protective equipment including safety glasses when operating drill bits
• Secure workpieces properly before drilling to prevent movement or spinning
• Use appropriate drilling speeds for the material and bit size—larger bits typically require slower speeds
• Apply cutting fluid or lubricant when drilling metal to reduce heat buildup and extend bit life
• Periodically withdraw the bit to clear chips and prevent binding, especially in deep holes
• Inspect bits regularly for wear, damage, or dullness; replace or resharpen as needed
• Store bits in organized cases or holders to prevent damage to cutting edges

Web Thickness: Heavy-duty web construction increases bit strength and rigidity, reducing deflection and breakage risk during demanding applications. This feature is particularly important for production environments and frequent use.

Overall Length Variations: Bit lengths generally increase with diameter, though jobber length bits maintain proportional sizing. Reduced shank bits commonly feature standardized 6" lengths regardless of cutting diameter.

Shank Design: Three-flatted shanks on larger bits provide superior grip in keyless chucks and reduce slippage under load. Standard round shanks are typical for smaller diameter bits used in traditional keyed chucks.

Note: Specifications vary by model. Always check individual product listings and manufacturer documentation for exact details regarding material composition, point geometry, overall length, and application recommendations.