"attaches" is correct and can be used in written English.
You can use it as a verb to describe the action of connecting or fastening one object to another. For example: "The flyer attaches easily to the wall with a few pieces of tape."
Exact(59)
" A knit wraps and attaches.
But blame attaches to the GPs too.
What a small cord Attaches us.
Bolt -- Attaches the booster to the tank.
Very little sadness attaches to my job.
Ken Wax attaches a Memo 20 to a file.
He attaches the hair pieces to a skullcap.
A surfeit of humiliation and guilt attaches itself to poverty.
But what happens as the parasitic body attaches?
Several of those countries' defence or military attaches attended.
Got many of documents from German delegates or attaches.
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com