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getting warmer....
OK, in re: airframe components, I believe you are talking about the fancy equivalent of an "anchor bolt" which expands when a threaded bolt (or stud) is screwed down into it. Th recess on the frame is a truncated cone which barely accepts the maximum radius of the (bolt?, Anchor?) and when the bolt is expanded, it fills the cavity. To be honest with you I never worked on the 18, so I can't speak with certainty, But I DO recall "expansion anchors" that were used on Warthogs.
To illustrate the concept for your edification, pick up a few concrete anchors from Home depot and some bolts to thread into them. I use them for removing pilot bearings s I find it is faster and cleaner than the grease /dowel method. You are basically dealing with the same concept as an expandable bolt that goes into dry wall and holds a picture up. ( pick up one of them while you are at HD as well ) On an airframe though, it is mission critical ( EVERYHING attached to an airframe is..) so it is probably pretty fancy, expensive, and may need to be tested /replaced on a regular basis.
Does that help? Check with your buddies to see if I am even close on this one.
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There may be nothing quite as expensive as a cheap Porsche: Ruby Red 84 928S : White 87 924s 2.5L NA (Blinky) M44/07-43H10676 spoiler delete - 046/2B - Belts 9/12, Clutch and OC seals 8/08 andd Red 94 Del Sol: Please put your Make, Model and Year in Sig. Try not to break more than you fix.
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