1/4-20 Bolt Dimensions: Understanding the Specifications
When it comes to working with bolts, understanding the dimensions is crucial to ensure a secure and reliable connection. One of the most common types of bolts used in various industries is the 1/4-20 bolt. In this article, we will delve into the dimensions of a 1/4-20 bolt and explore its specifications.
What is a 1/4-20 Bolt?
A 1/4-20 bolt is a type of hex-head bolt that has a diameter of 1/4 inch and 20 threads per inch. It is commonly used in applications where a strong and reliable connection is required, such as in construction, manufacturing, and automotive industries.
Dimensions of a 1/4-20 Bolt
Here are the dimensions of a standard 1/4-20 bolt:
Diameter:
- Major diameter: 0.250 inches (6.35 mm)
- Minor diameter: 0.216 inches (5.49 mm)
Thread:
- Threads per inch: 20
- Thread pitch: 0.050 inches (1.27 mm)
- Thread length: varies depending on the bolt length
Head:
- Hex head size: 7/16 inch (11.11 mm)
- Hex head thickness: 0.250 inches (6.35 mm)
Length:
- Varies depending on the application, but common lengths range from 1/2 inch to 6 inches (12.7 mm to 152.4 mm)
Tolerances and Specifications
It's essential to note that the dimensions of a 1/4-20 bolt can vary depending on the manufacturer and the specific application. However, most bolts conform to the specifications outlined in the ASTM A307 or SAE J429 standards.
Conclusion
In conclusion, understanding the dimensions of a 1/4-20 bolt is critical to ensure a secure and reliable connection in various applications. By knowing the diameter, thread, head, and length specifications, you can choose the right bolt for your project and avoid potential errors or failures.
