Fastening (noun)

The act of securing or fixing two or more objects together.

Origin:

From the verb 'to fasten' meaning 'to secure or fix in place'.

Examples:

1. The fastening of the book cover was done with a simple stitch, that held the pages inside securely.
2. The fastening of the necklace was done with a clasp, which was easy to open and close.
3. The fastening of the door was done with a latch, which could be easily unlocked from the inside.
4. The fastening of the car seat belt was done with a clip, which could be easily adjusted for size.
5. The fastening of the curtains was done with a hook and eye, which allowed for easy opening and closing.