.250-28 UNF-2B Minor Diameter: Understanding the Specifications
Introduction
The .250-28 UNF-2B minor diameter is a specific thread size used in various industries, including aerospace, automotive, and industrial manufacturing. In this article, we will delve into the details of this thread size, its dimensions, and its applications.
Thread Specifications
The .250-28 UNF-2B minor diameter thread is a type of Unified National Fine (UNF) thread, which is a standard thread form used in the United States and Canada. The "250" in the designation refers to the major diameter of the thread, which is 0.250 inches or 6.35 mm. The "28" refers to the threads per inch (TPI), which is 28 threads per inch.
The "UNF-2B" designation indicates that the thread is a Unified National Fine thread with a Class 2B tolerance, which means that the thread has a moderate tolerance range. The minor diameter of the thread is the diameter of the thread at its root, which is the smallest diameter of the thread.
Dimensions
Here are the dimensions of the .250-28 UNF-2B minor diameter thread:
- Major diameter: 0.250 inches (6.35 mm)
- Minor diameter: 0.216 inches (5.49 mm)
- Pitch: 0.0357 inches (0.907 mm)
- Threads per inch (TPI): 28
- Thread length: varies depending on application
Applications
The .250-28 UNF-2B minor diameter thread is commonly used in various industries, including:
- Aerospace: This thread size is used in aircraft and spacecraft applications, where high-strength and lightweight materials are required.
- Automotive: The .250-28 UNF-2B thread is used in engine components, such as cylinder heads and engine blocks, as well as in suspension and steering systems.
- Industrial manufacturing: This thread size is used in machinery and equipment, such as pumps, valves, and hydraulic systems.
Conclusion
In conclusion, the .250-28 UNF-2B minor diameter thread is a specific thread size used in various industries. Its unique dimensions and specifications make it suitable for applications that require high-strength and lightweight materials. Understanding the specifications and dimensions of this thread size is crucial for designing and manufacturing components that require it.
