FAA AMT (Aviation Maintenance Technician) Airframe Practice Exam

Question: 1 / 1030

What does the designation MS20426AD-6-5 indicate about a countersunk rivet?

It has an overall length of 6/5 inch

It has a diameter of 5/16 inch

It is made of aluminum

It has an overall length of 5/16 inch

The designation MS20426AD-6-5 for a countersunk rivet indicates that it has an overall length of 5/16 inch. This designation is a part number system used to identify specific characteristics of aircraft fasteners. In this case, the "6-5" portion of the part number refers to the length of the rivet, specifying that it is 5/16 inch long. This helps mechanics and technicians easily identify and select the correct fasteners for the job based on the specifications provided in the part number.

Options A, B, and C are incorrect because the designation MS20426AD-6-5 does not relate to the overall length being 6/5 inch, a diameter of 5/16 inch, or being made of aluminum. The key information in the part number is the length of the rivet, which is specified as 5/16 inch in this case.

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