What does the number "470" in a rivet designation refer to?

The number "470" in a rivet designation denotes the specific head style of the rivet. In aerospace applications, rivets are categorized by a numbering system that includes the head style to standardize how they are identified and used. This enables engineers and assemblers to select the appropriate rivet for a given application based on factors like load-bearing requirements and aesthetic considerations.

Head styles play a crucial role in the rivet's ability to grip materials, the surface area it covers, and the overall performance in the assembly. The designation allows for quick identification without the need for elaborate descriptions, ensuring that critical specifications are easily accessible during the design and manufacturing process.

Other elements such as alloy designation, diameter measurement, and length measurement have their specific designations or numbers, which differ from the "470" head style designation. Understanding this system is essential for those involved in aerospace material selection and joining processes to ensure the correct types are used for safety and performance.