Hi-lok Holes
Hi-lok Holes
(OP)
Is there a standard out there that gives the hole deminsions for specific hi-loks? I am retired Air Force and now working for a company that provides major structural overhaul for military aircraft using the military technical guidlines. Is there something that the general or comercial aviation uses for hole preperation on the installation of hi-loks?
Thanks,
Jimmy
Thanks,
Jimmy





RE: Hi-lok Holes
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Nert
RE: Hi-lok Holes
Here's a link to th Hi-Shear corporation website where they have published Hilok allowables as well as an installation guide. There, they recommend not exceeding an interference fit of greater than 0.0015. As Nert indicated though, the SRM is always the best reference.
Phil
http://www.hi-shear.com/fastener_hl_stds.htm#CollarSele...
http://www.hi-shear.com/brochures/Hilok_Hitigue_Install...
RE: Hi-lok Holes
RE: Hi-lok Holes
Remember, hi-loks can also be used just like conventional bolts, in comparable holes, also. Occasionally I have used them in joints that required a high strength fastener where I didn't have access to install the head and nut on opposite sides of the joint.
RE: Hi-lok Holes
If you would like I could scan and email you the section.
RE: Hi-lok Holes
AeroE: how did you install the Hi-Lok if you didn't have access to the other side of the joint?
Alex
RE: Hi-lok Holes
Please take a moment and read the Hi-Lok catalog.
STF
RE: Hi-lok Holes
Ummm...I am a bit confused. I am reading the 717 SRM and it states:
"Hi-Lok pins installed in aluminum structure must be installed into interference-fit holes unless
otherwise specified on the Engineering drawing."
When consulting the Hi-Lok hole size table, the majority of the holes are inteference fit. What's happening?
Alex
RE: Hi-lok Holes
Access to one side: The whole point of the Hi-Lok is that you only need to wrench it from one side to install it.
STF
RE: Hi-lok Holes
Bob B