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Holes drilling table for NASM4?

Holes drilling table for NASM4?

Holes drilling table for NASM4?

(OP)
Hi to everybody!
I'm looking for a holes drilling table regarding the installation of the NASM4 bolts.
My question is: Is there any table or standards that shows the hole dimension values for the NASM4 bolts installation? or Where I can find it?

I also checked the fabbrication standard NASM4 but i don't find anythings.

Regard dz78  

 

RE: Holes drilling table for NASM4?

NASM4 = AN4.
These are not close-tolerance bolts. You decide the hole diameters yourself based on manufacturing tolerances, wether you have a floating nutplate etc.
As an example, one aircraft manufacturer uses 7.09-7.39 for -4 bolt holes attaching to a floating nutplate.
 

RE: Holes drilling table for NASM4?

Dz78...

Look closely at the NASM3--20 spec... just above the title block there is a thin block, RH side sez "part numbers remain AN3--40".

NAS618 is a universal standard for fastener dia and hole dia Class

Regards, Wil Taylor

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