In addition to what r1957 and CoryPad have mentioned.
There are "best practices" that should be employed when installing any larger cluster-pattern of fasteners in primary or even lighter secondary structure. these practices ensure even settling of parts together resulting in best/optimum fastener load distributions and minimal structural distortion. IF structure is assembled without employing these "best practices" then really odd assembly problems will surface, or in-service premature failure are highly likely.
These best practices are especially critical when assemblying structure with various type fasteners [solid/blind rivets, bolts/nuts, lock-bolts and/or Hi-Loks, blind-bolts, etc] and fay surface sealant.
I haven't got time to note these specific practices, right now.
Regards, Wil Taylor
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