What is hex nut

A nut is a type of fastener with a threaded hole. Nuts are almost always used in conjunction with a mating bolt to fasten multiple parts together. The two partners are kept together by a combination of their threads' friction (with slight elastic deformation), a slight stretching of the bolt, and compression of the parts to be held together.The most common shape today is hexagonal, for similar reasons as the bolt head: six sides give a good granularity of angles for a tool. Hex nuts are widely used in many industries such as; machinery, automotive, electronics, cabinets, furniture, glasses etc.