In the rivet designation MS20470 AD-4-6, what does 4 indicate?

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Prepare for the ASA Aviation Maintenance Technician General Test. Utilize flashcards and multiple-choice questions with hints and explanations. Ace your exam!

Multiple Choice

In the rivet designation MS20470 AD-4-6, what does 4 indicate?

Explanation:
The number after the dash is the diameter expressed in 32nds of an inch. So 4 means 4/32 inch, which simplifies to 1/8 inch. That’s why the rivet in this designation is 1/8 inch in diameter. The second dash number (not asked here) indicates grip length, with 6 corresponding to 6/16 inch (3/8 inch). The other options would imply different 32nd-inch diameters, which isn’t how this designation is read.

The number after the dash is the diameter expressed in 32nds of an inch. So 4 means 4/32 inch, which simplifies to 1/8 inch. That’s why the rivet in this designation is 1/8 inch in diameter. The second dash number (not asked here) indicates grip length, with 6 corresponding to 6/16 inch (3/8 inch). The other options would imply different 32nd-inch diameters, which isn’t how this designation is read.

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