is "need to not" grammatically correct?

[mokbon]

Ross: You need to not touch any of those.
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From Friends S1 Ep5



I think it means that you must not touch...

like...you need to is you have to..and not touch

but what about "you need not to touch"?

[Barb_D]

Think of "not touch" as the opposite of "touch."

You need to step here to open the secret compartment. -- Must do it.
You need to NOT step here or the trap will spring and you will be caught. -- Must not do it.

You must not touch any of those. is certainly more clear and direct.
Don't touch any of those! is more direct yet.

[Barb_D]

Sorry, reference "need not" it means it's not necessary, but it's not forbidden.

You needn't worry. Everything is taken care of. -- There is no need for you to worry.
You need't go to the post office after all. I bought stamps on my way home. -- There is no need for you to go there.

It does not have the same meaning as "You need to not go" which means you must not go, you must avoid going.

[mokbon]

Sorry, reference "need not" it means it's not necessary, but it's not forbidden.

You needn't worry. Everything is taken care of. -- There is no need for you to worry.
You need't go to the post office after all. I bought stamps on my way home. -- There is no need for you to go there.

It does not have the same meaning as "You need to not go" which means you must not go, you must avoid going.

Thanks, and I summarize that
need not -> unnecessary
need to not -> must not(avoid)