A screw is an essential member of the fastener family that helps to hold two or more parts together to form part of a larger structure in the aircraft Due to its versatility it is the most common threaded fastener used in aircraft manufacturing Screws used in the aircraft industry are of very high quality as compared to those used in general industries They come in different types materials sizes and head shapes depending on the purpose and strength required Screws currently account for a sizeable share of the total aircraft fasteners market but are one of the fastest growing fastener types in the industry