Learning from an owner annual

Kyle Boatright wrote:
Exactly right. If you look through the Aircraft Spruce catalog
you'll find
several different strengths of screws. Some are 30,000 lb/square inch, some
are 55,000/square inch, etc. In some applications (probably the Navion, as
pointed out above), it makes a difference which screw you use. If you go
down to the local hardware store and buy Torx fasteners, you'll probably
never know if the fastener you chose has the correct strength.

That's one of the reasons I get all my hardware for any project form
McMaster.com. They tell you what material is used and what the strength
is. BTW I just looked on their 18-8 stainless steel screws, it looks
like they are 70,000 or 80,000 psi. They don't seem to have any flat
head torx screws in stainless steel for some reason though.


--
Chris W
KE5GIX

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