"Stuart & Kathryn Fields" wrote in message
...
Well, I use 4 of these bolts in the "Jesus" bolt position whose job is to
keep my my entire rotor blade system from departing like a kids toy. Yes,
I want to be 500' in the air not even wondering if I got the bolts that I
thought I did.

Stu
"Maxwell" wrote in message
...

"cavelamb himself" wrote in message
...
wrote:
On Jan 3, 2:45 pm, "Stuart & Kathryn Fields" wrote:

Recent quote for 16 of these bolts was about $20.00 each!! Anyone out
there
with a less expensive source?


Since I presume you're dealing with an experimental aircraft, and a
MS20074 bolt is a coarse thread (the only coarse thread aircraft
structural bolt I know of), 125 ksi, drilled head hex bolt, why not
just use a grade 5 or grade 8 auto bolt? They are quite good quality
if you buy from the right source. Try some of the race car suppliers
maybe.

Regards,
Bud


It might be quite good quality - or it might be junk.

How are you going to know???

If you go with a quailty manufacturer that will certify the grade,
specify rolled threads, and have them individually magnafluxed, you
should be good to go.



Well in that case I think I would consider having them independently
inspected even if I purchased AN certified hardware. I don't think it is
horribly expensive.