Tape for inspection panels?

[JackC]

Steen made some with a single center screw that would tighten down a internal spider.

I used to lose the inner ones on my Stinson, that fixed it right as rain

Kinda like these

Steen's Aerolab inspection Covers

Steen's Aerolab Inspection Covers. Installed inside the wing.

skyotelog.blogspot.com

 

[Bob Turner]

That is prevented by a #4x1/4 sheet metals screw and a clip Tinnerman nut.

The little spring inside the dome is at 45 degrees to the sirflow and the screw is dead center forward, with the hole in the middle of the ring.