3/8-16 External Thread Dimensions
Overview
The 3/8-16 external thread is a type of thread used in various industries, including engineering, automotive, and construction. It is a standardized thread size, defined by the American Society of Mechanical Engineers (ASME) and the International Organization for Standardization (ISO). In this article, we will explore the dimensions of the 3/8-16 external thread.
Thread Dimensions
The 3/8-16 external thread has the following dimensions:
- Major Diameter (D): 0.375 inches (9.53 mm)
- Pitch (P): 0.0625 inches (1.588 mm)
- Threads per Inch (TPI): 16
- Minor Diameter (d): 0.331 inches (8.41 mm)
- Thread Height (H): 0.044 inches (1.12 mm)
- Thread Angle (α): 60 degrees
Thread Series
The 3/8-16 external thread is part of the Unified Thread Standard (UTS) and belongs to the UNC (Unified National Coarse) thread series. This thread series is commonly used for bolts, screws, and other fasteners in a wide range of applications.
Applications
The 3/8-16 external thread is widely used in various industries, including:
- Automotive: Engine blocks, cylinder heads, and other engine components
- Aerospace: Aircraft structures and components
- Construction: Building materials, fasteners, and fittings
- Engineering: Machinery, equipment, and components
Tolerances
The dimensions of the 3/8-16 external thread are subject to tolerances, which are specified by the ASME and ISO standards. The tolerances ensure that the thread can be manufactured and assembled within a specific range of dimensions, ensuring proper fit and function.
Conclusion
In conclusion, the 3/8-16 external thread is an important standardized thread size used in various industries. Understanding its dimensions and tolerances is crucial for proper design, manufacture, and assembly of components that use this thread size.
