At least in the US, for the vast majority of instances, an Anderson SB350 seems to be more worthwhile and widely utilized, especially if you're going through the hassle to install it from scratch.
Of course, if you have a particular use for a NATO plug, ignore everything I wrote.
As for the part numbers, I'd imagine all you'd need is the NATO socket itself and any related mounting bracket, as the wiring would be bespoke to your application. If it'll be wired direct to the battery, don't forget to add a fuse in-line rated for the wire.