Jobber Drill Bit Size Chart: Understanding the Basics

Drill bits are an essential tool in construction, home improvement, and various industries. They come in a variety of sizes, shapes, and materials to cater to different drilling needs. In this article, we'll explore the jobber drill bit size chart, its components, and how it can help you choose the right drill bit for your project.

Understanding Drill Bit Components

A drill bit consists of three main parts: body, flutes, and shank. The body is the spiral part that resembles a corkscrew, responsible for cutting and removing material along its sides. The flutes are the channels on the sides of the drill bit where debris and chips collect during drilling. The shank is the cylindrical part at the base of the drill bit, which secures into your drill.

Jobber Drill Bit Size Chart

Drill bits come in standard sizes, which can be divided into three main parts: fractional, decimal, and metric sizes. The ANSI/ASME B94.11M-1993 standard provides a comprehensive chart for twist drills, including straight and tapered shanks. The most common drill bits have straight shanks.

History of Drill Bits

Believe it or not, drill bits have been around since 1861! Over the years, they've evolved to cater to different materials and drilling needs. Today, drill bits are available in a range of sizes and types, making them an essential tool for various industries.

Fractional and Metric Sizes

Drill bits can be measured in either inches (fractional sizes) or millimeters (metric sizes). The ANSI/ASME B94.11M-1993 standard provides a conversion chart for easy reference.

In conclusion, the jobber drill bit size chart is an essential tool for choosing the right drill bit for your project. By understanding the components of a drill bit and how to measure its size, you can ensure accurate drilling and achieve professional results. Whether you're a DIY enthusiast or a seasoned professional, having access to a reliable drill bit size chart can make all the difference in your work.

Jobber drill bit size chart