.3125-18 UNC-2B Drill Size: Understanding the Specifications
The .3125-18 UNC-2B drill size is a specific type of drill bit used in various industries, including manufacturing, construction, and engineering. In this article, we will delve into the details of this drill size, its specifications, and its applications.
What does the .3125-18 UNC-2B designation mean?
The .3125-18 UNC-2B designation is a code that provides information about the drill bit's dimensions and thread specification. Let's break it down:
.3125: This is the decimal equivalent of the drill bit's diameter in inches.18: This represents the number of threads per inch (TPI) on the drill bit.UNC: This stands for Unified National Coarse, which is a thread standard used in the United States and Canada.2B: This is a tolerance class that indicates the drill bit's thread fit. In this case,2Brepresents a medium-fit thread.
Specifications and Dimensions
Here are the key specifications and dimensions of the .3125-18 UNC-2B drill size:
- Diameter: 0.3125 inches (7.94 mm)
- Length: Varies depending on the manufacturer and application
- Threads per inch (TPI): 18
- Thread standard: Unified National Coarse (UNC)
- Tolerance class: 2B (medium-fit thread)
Applications and Industries
The .3125-18 UNC-2B drill size is commonly used in various industries, including:
- Manufacturing: For drilling and tapping holes in metal parts and components.
- Construction: For drilling holes in concrete, masonry, and wood for anchor bolts and fasteners.
- Engineering: For precision drilling and tapping in mechanical and aerospace engineering applications.
Conclusion
In conclusion, the .3125-18 UNC-2B drill size is a specific type of drill bit used in various industries. Understanding the specifications and dimensions of this drill size is crucial for selecting the right tool for the job and ensuring accurate and precise results.
