.25-20 Thread: Understanding the Basics
The .25-20 thread is a type of thread used in various industries, including aerospace, automotive, and industrial manufacturing. In this article, we will delve into the details of the .25-20 thread, its dimensions, and applications.
What is .25-20 Thread?
The .25-20 thread is a type of Unified thread, which is a standard thread form used in the United States and Canada. The thread is identified by its major diameter, thread density, and thread form. In the case of the .25-20 thread, the major diameter is 0.25 inches, and the thread density is 20 threads per inch (TPI).
Dimensions
The following are the dimensions of the .25-20 thread:
- Major diameter: 0.25 inches (6.4 mm)
- Minor diameter: 0.216 inches (5.5 mm)
- Pitch: 0.050 inches (1.27 mm)
- Threads per inch (TPI): 20
Applications
The .25-20 thread is commonly used in various industries, including:
Aerospace
- Used in aircraft engines and components
- Used in missile guidance systems
Automotive
- Used in engine components, such as cylinder heads and engine blocks
- Used in transmission and drivetrain components
Industrial Manufacturing
- Used in pumps, valves, and other equipment
- Used in machinery and equipment for various industries
Thread Series
The .25-20 thread is part of the Unified thread series, which includes threads with diameters ranging from 1/4 inch to 1 inch. The Unified thread series is used in a variety of applications, including construction, machinery, and equipment.
Conclusion
In conclusion, the .25-20 thread is a widely used thread in various industries, including aerospace, automotive, and industrial manufacturing. Its dimensions and thread form make it suitable for a range of applications, from engine components to machinery and equipment. Understanding the basics of the .25-20 thread is essential for designers, engineers, and manufacturers who work with this thread type.
