Abstract: Most of the Industries are growing faster these days and they need most accuracy results in every product they develop. Especially in the automotive mechanical industries which manufacture nuts and bolts. There is need to design a system that is recognises the nuts and bolts and it’s dimensions. For these type of segregation and detection the most prominent technology that is “ CONVOLUTION NEURAL NETWOK” algorithms are used by the most of the industries. When coming to CNN it is a type of artificial neural network used for image recognition , image processing and specifically designed to process pixel data.