Drill Bit Size Chart: MM and Inches

When it comes to drilling holes in various materials, having the right drill bit size is crucial for achieving accurate results. The numerical number of a drill bit falls within a specific range, depending on its type and intended use. In this article, we will explore common types of drill bits and their typical sizes, providing you with a comprehensive drill bit size chart.

Hole Saw Drill Bits

Hole saw drill bits are designed for drilling large holes in materials such as metal and wood. The numerical value ranges between 1/4 inch and 2 inches. These drill bits are ideal for making huge holes quickly and efficiently.

Forstner Drill Bits

Forstner drill bits are used to create holes with flat bottoms in soft materials like wood. Their typical size range is between 1/4 inch and 1-1/2 inches. Forstner drill bits are perfect for precise drilling tasks, especially when working with wood.

Spade Drill Bits

Spade drill bits have a flat, paddle-like tip that makes them suitable for making large holes in soft materials like wood. The numerical value ranges between 1/8 inch and 1 inch. These drill bits are ideal for DIY projects or industrial applications where precise drilling is not necessary.

Brad Point Drill Bits

Brad point drill bits feature a pointed tip that helps keep the bit from wandering, making them perfect for drilling into wood. Their typical size range is between 1/16 and 1 inch. Brad point drill bits offer precise control and are ideal for woodworking projects.

Twist Drill Bits

Twist drill bits are the most popular type of drill bits and can be used to drill into plastic, metal, and wood. They come in a variety of sizes, each suited for specific materials and uses. Twist drill bits are versatile and suitable for both DIY projects and industrial applications.

In conclusion, choosing the right drill bit size is crucial for achieving accurate results when drilling holes. By understanding the typical numerical values for different types of drill bits, you can select the appropriate size for your project. Whether you're a seasoned DIYer or an industrial professional, having the right drill bit size chart can make all the difference in your work.

Drill bit size chart mm and inches