Mounting a subwoofer to a custom box

[Heresy 10+ year member]

I am new to the speaker box building community and have no idea what kind of screws to mount the subwoofer with. The box is already built and all I have to do is drill and mount the subs. I know t-nuts should be used but should I use metal or plastic screws? Should I use additional gaskets is the sub already has its own? It seems stupid, but can someone please help.

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[<natem33>]

I have always used 5/8 - 3/4 inch metal screws and drilled directly into the box. The supplied gasket should be good enough. The only prob that I have encountered with my may of sub installation is that if you need to remove the sub from the box a couple of times, the cheap pressed fiber board tends to start falling apart around the screw holes. When this happened to me I just repaired the box with a plastic wood filler. You can re-drill the holes once this stuff dries.