1/2-20 ボルト: Understanding the Specifications
What is a 1/2-20 Bolt?
A 1/2-20 bolt is a type of fastener commonly used in various industries, including aerospace, automotive, and construction. The designation "1/2-20" refers to the bolt's thread size and pitch.
Thread Size and Pitch
The "1/2" in 1/2-20 bolt refers to the thread diameter, which is 1/2 inch or 12.7 mm. The "20" refers to the thread pitch, which is 20 threads per inch (TPI). This means that for every inch of thread, there are 20 threads.
Specifications and Uses
1/2-20 bolts are designed to meet specific standards and are often used in high-stress applications. Some common specifications and uses include:
- Aerospace: 1/2-20 bolts are used in aircraft and spacecraft applications, where high-strength and high-reliability fastening is critical.
- Automotive: These bolts are used in high-performance vehicles, engine mounts, and other critical applications.
- Construction: 1/2-20 bolts are used in building foundations, bridges, and other heavy civil construction projects.
Key Characteristics
1/2-20 bolts have several key characteristics that make them suitable for demanding applications:
- High-strength: 1/2-20 bolts are designed to withstand high levels of stress and pressure.
- Corrosion-resistant: Many 1/2-20 bolts are coated with corrosion-resistant materials to prevent rust and degradation.
- High-temperature resistance: These bolts can withstand high temperatures, making them suitable for use in harsh environments.
Conclusion
In conclusion, 1/2-20 bolts are high-strength, high-reliability fasteners used in a variety of demanding applications. Their unique thread size and pitch make them ideal for use in aerospace, automotive, and construction industries. When selecting fasteners for critical applications, it's essential to specify 1/2-20 bolts to ensure the highest levels of performance and reliability.
