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Hi-Lite interference
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Source：Internet Author：Unknow Pubdate：2008-04-02
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JPAdlok (Aeronautics)
23 Nov 07 7:29
Maybe somebody can explain why can we install Hi-lite with higher interference compared to Hi-lok?
rb1957 (Aerospace)
23 Nov 07 8:27
from ... http://www.hi-shear.com/fastener_hst.htm
it looks like the HiLite collars ar a different profile that Hi-Lok ones. Also it'd make sense that a fasteners touted for improved fatigue properties would have higher preloads (and torques)
JPAdlok (Aeronautics)
24 Nov 07 6:05
Thanks rb1957…
I know the different behaviour of fatigue properties(a different profile of a collar), but I don’t understand the different fit interference about Hi-Lok vs Hi-Lite and how much.
rb1957 (Aerospace)
24 Nov 07 7:26
字串1
after my post i checked hi-shear.com, and the installation torques are the same ... the catalogue notes that the difference between the Hi-Lok and Hi-Lite is a shorter thread and a slightly changed thread lead-in.
if you are installing Hi-Lites into a different hole dimensions, you might want to contact them for their comments.
Fatstress (Aeronautics)
25 Nov 07 6:43
JP,
look also into the Thread I started, thread31-121526: Fatigue life enhancement with Hi-lite
.....But I have received an answer from Hi-shear already and according to them the higher interference that can be achieved with Hi-lite is due to the different lead-in radius design....
wktyalor and Kenneth also submitted a lot of useful explanation and links there.
JPAdlok (Aeronautics)
25 Nov 07 16:35
Thankyou for your informative replies
字串8
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