What's the plural form of threading? Here's the word you're looking for.
Answer
The noun threading can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be threading.
However, in more specific contexts, the plural form can also be threadings e.g. in reference to various types of threadings
or a collection of threadings.
Examples
The majority, 96.2 percent, of the e-mails had only up to four threadings.