Structure of Social Security Numbers. A Social Security Number (SSN) consists of nine digits, commonly written as three fields separated by hyphens: AAA-GG-SSSS. The first three-digit field is called the area number. The central, two-digit field is called the group number. The final, four-digit field is called the serial number.
Fabrication, is the building of something brand new, that's never been seen before, or invented. Manufacturing, is the duplication of something on a mass scale. Generally, the way it works is, you fabricate something that you need, then manufacture what you fabricate. A good example is, a car company decides to design a brand new car from the ground up.
Letâs look at the types of fabrication processes in greater detail here: 1  Cutting. There are many ways to cut nowadays. 2  Folding. Some parts need to be bent. 3  Machining. This is the process of removing metal from a piece of material.  Punching. Punching is the act of a punch and a die forming a âscissorâ effect on a piece of metal to make a hole in it.