fiorina fratelli srl fasteners Germany fiorina fratelli srl model fiorina fratelli srl price

fiorina fratelli srl fastener screws are a common type of fastener, widely used in machinery, electrical appliances, and buildings. Currently, standard parts on the market are mainly made of three materials: carbon steel, stainless steel, and copper. We distinguish low-carbon steel, medium-carbon steel, high-carbon steel, and alloy steel based on the carbon content in carbon steel materials. Cylindrical in shape, with grooves carved on the surface called threads. It is a tool that gradually tightens objects and machine parts by utilizing the physics and mathematics principles of inclined plane circular rotation and friction. Screw is the general term for fasteners. Principle of screws