What are the dimensions of an MS20430AD-4-8 rivet?

The dimensions of an MS20430AD-4-8 rivet correspond to specific parameters that can be deciphered from its designation. The "4" in the designation indicates the diameter of the rivet, which is 1/8 inch. The "8" refers to the length of the rivet, which is 1/2 inch.

In this context, the option that correctly identifies these dimensions is the one stating 1/8 inch in diameter and 1/2 inch long, making it the accurate choice. Understanding how to interpret rivet part numbers is crucial in applications where the correct fastening is essential to structural integrity and safety.

Other options present incorrect diameter and length combinations that do not align with the MS20430AD-4-8 specification, which is why they do not satisfy the requirements of the question.