A screw or bolt,is a type of fastener which is used in automotive industry, earth movers,  aircrafts, vehicles, military vehicles, erection of machinery, agricultural equipments and machinery, assembling of electronic components or requiring connection in everywhere. Bolts are fastened which DIN norms and which qualities needed in  area of usage. To work out operation instructions. After that starts to process in operation instructions. Supplying to materials which is desired quality and quantity. To be manufactured bolt are followed in process according to graph DIN norm. Cutting height is located and cutting material which is done for quality control in every process. If its necessary, make a centre hole on the cutted product in CNC machines. After that  cutted part will warming up in 1050°C in induction. Product, which is connected to press is forging the head form suitable for DIN norm. The good is processing in CNC lathe with writing software. For the gear in material is determined rolls and to work roll in scrubbing machine for the tap the rolls. After that material is done heating treatment in atmosphere controlled ovens and bolt is made coating which has surface protection.