Plus+Tite inserts have superior pullout resistance in plastics and thin sheet metal, and they install into variable-thickness materials. The straight-shank design uses a small mounting hole, and the pre-bulbed version requires less installation force. (Source: PennEngineering)
Very comprehensive overview on the current state of fasteners, Ann. I'm curious at something you said at the end that design for disassembly was not really a big trend any more. That surprises me given all the requirements and focus on sustainability and environmental concerns. isn't design for disassembly part of that march to green design?