'Thread' in the Bible

"Speak to the Israelites and tell them to make tassels for themselves on the corners of their garments throughout their generations, and put a blue thread on the tassel of the corners.

The priest will take cedar wood, hyssop, and crimson thread, and he will throw them in the midst of {the burning heifer}.

and every open vessel which hath no covering of thread upon it is unclean.