The top and bottom covers of the 740B are secured by screws which go through 6-32 J-style?spring nuts clipped onto the side panels. ?Except I'm missing some of them. ?The manual doesn't mention them.
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These particular?spring nuts (speed?nuts, clip nuts, Tinnerman nuts, J-nuts, U-nuts)?seem to be obsolete or custom-made; I can't find anything to match.
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The sticking point is the?1/8-inch panel depth.
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All I can find?are for a 1/16-inch?panel.
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Got any leads?
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Thanks,
Dave Wise
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PS: I think U-style would work as well as J-style.