Around the World from West coast?

[sleddog]

My curiosity has been tweaked. From what I can search, solid rivets require access to both sides of the material. One option offered my McMaster Carr was hex rivets that work from the outside. The hex rivets are a variation of a drywall hanger, but listed as the strongest of the solid rivet alternatives. But, the boom doesn't look like those were used unless the heads were ground off.
Ants

Good question, Ants. I was not present nor privy to the boom repair technique, other than overhearing Buzz say the rivets were solid stainless steel. I did notice the rivet heads were countersunk slotted flathead and thus flush with the repair surface. After that, your guess is as good as mine. The sealant between the repair bandage and the boom was white 5200, which Buzz says is as good as any adhesive he knows.