>Really dumb question here:
>Thumbing through the Aircraft Spruce catalogue I have got totally confused
>about which nut and bolt works best to hold the instruments (Alt, ASI, T&S
>etc) into the panel. The catalogue talks about "instrument mounting nuts"
>(p72 and p275) but these look perhaps overly complicated for the Europa
>removable panel. I would be grateful for any comments from those well down
>this path.
>
>Also, what length of bolt is necessary?
>
>John Bampfylde, #130
>
>
The main point about instrument nuts and bolts is that they are non-magnetic
-hence brass or some forms of Stainless steel -better known as CRS
(corrosion resistant steel) in the aircraft biz; your exhausts are probably
made from Stainless -not that you'd know from the amount of rust usually on
them....
Instrument nuts are non-magnetic captive nuts designed to fit both the
length of the hole, and to pop out tangs into returns machined in the front
of the hole.
Even 'though suitable "ordinary" CRS or brass nuts are available, I would
still advise using the proper items: makes releasing an instrument a one
tool job, and there are bound to be times when you want to take something
out (or even just loosen it) without removing the entire panel.
Miles
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