Which type of fastener is used for higher pressure applications?

In higher pressure applications, the use of permanent fasteners is essential due to their ability to provide a secure and strong connection that can withstand significant loads and stresses. Permanent fasteners, such as rivets or bolts that are tightened and secured in place, ensure that the joint remains intact under extreme conditions, including high pressure.

Permanent fasteners are designed to be resilient and provide a long-lasting bond, which is crucial in aviation and other high-stakes environments where failure could lead to severe consequences. They are engineered to resist loosening from vibration and other dynamic forces, making them suitable for applications where safety and structural integrity are paramount.

While hex nuts can secure bolts and are effective in various applications, they are not inherently designed for high-pressure situations without the context of the material and installation method they are used with. In contrast, effective use of permanent fasteners guarantees that the connection can handle higher pressure without the risk of failure.