A joke chart of "special" screws and bolts, and a clever one at that.
I recall an early version, 70's-ish semingly in all the aircraft subcontractor shops. Logically, the artist contrived this illustrating frequent disconnects from engineering, the production shop, and assembly lines.
Thankfully, the chart progressed with new fixes. I'll refrain posting judgments on how real it now appears...
My favorites; the substantial sized fasteners hiding insufficient connections, and hex heads to twiddle while looking busy.
...we'll learn more by wandering than searching...
A few others exist in reality as well, being former Army Ordnance, I'm familiar with explosive bolts (DIN-893)!
Last edited by Murph1090; Feb 19, 2019 at 05:47 PM.
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