Location of Hi-Loks on B737 Fuselage 4

[Zinzu]

Hello All,

I am trying to find out where in a Boeing 737 fuselage do they use Hi-Lok Fasteners. From some research, I found out that they use them in engine nacelles and rudders but I need to know in what part of the fuselage are they widely used.

Please help.

Thanks in advance,
Chandresh.

 

[rb1957]

i would expect to see them on the spar frames (attaching the wing to the fuselage), on the empennage attach fttgs, and scattered about the place ...

 

[MiketheEngineer]

Call Boeing??

 

[tbuelna]

Zinzu,

The 737 fuselage structure uses lots of hi-loks for installation level shear attachments in frames, intecostals, floor beams, door frames, etc. These shear hi-loks are commonly titanium pins with aluminum collars, which gives the best balance of strength, cost and weight. The primary consideration with using hi-loks is adequate access for the collar installation tool.

Hope that helps.
Terry