18 UNC 2A Dimensions: A Comprehensive Guide
The 18 UNC 2A thread is a type of screw thread used in various industrial and manufacturing applications. It is a coarse thread with a major diameter of 1.5 inches (38.1 mm) and a thread pitch of 2 threads per inch (TPI). In this article, we will delve into the dimensions of the 18 UNC 2A thread and its applications.
Thread Dimensions
The following are the basic dimensions of the 18 UNC 2A thread:
Major Diameter
The major diameter of the 18 UNC 2A thread is 1.5 inches (38.1 mm). This is the largest diameter of the thread, measured from the crest of one thread to the crest of the opposite thread.
Minor Diameter
The minor diameter of the 18 UNC 2A thread is 1.347 inches (34.2 mm). This is the smallest diameter of the thread, measured from the root of one thread to the root of the opposite thread.
Pitch
The pitch of the 18 UNC 2A thread is 2 threads per inch (TPI). This means that there are two complete threads per inch of length.
Thread Depth
The thread depth of the 18 UNC 2A thread is 0.136 inches (3.45 mm). This is the distance between the major and minor diameters of the thread.
Thread Length
The thread length of the 18 UNC 2A thread can vary depending on the application. However, the standard thread length for this thread is typically between 1 inch (25.4 mm) and 12 inches (304.8 mm).
Applications
The 18 UNC 2A thread is commonly used in various industries, including:
Aerospace
The 18 UNC 2A thread is used in aerospace applications, such as in the assembly of aircraft components and in the manufacture of spacecraft.
Automotive
This thread is used in automotive applications, such as in the assembly of engine components and in the manufacture of vehicle accessories.
Construction
The 18 UNC 2A thread is used in construction applications, such as in the assembly of building components and in the manufacture of construction equipment.
Industrial
This thread is used in various industrial applications, such as in the assembly of machinery components and in the manufacture of industrial equipment.
Conclusion
In conclusion, the 18 UNC 2A thread is a widely used thread in various industries, including aerospace, automotive, construction, and industrial applications. Its coarse thread pitch and large major diameter make it suitable for applications that require high strength and reliability. By understanding the dimensions and applications of the 18 UNC 2A thread, engineers and manufacturers can design and manufacture products that meet the required specifications and standards.
