Screw element for making screw connection has threaded pitch differing at least on a part of screw-in length from threaded pitch on remaining part to ensure even distribution of notch stresses

摘要

The screw element has a threaded pitch which differs at least on a part of the screw-in length from the threaded pitch on the remaining part of the screw-in length. The threaded pitch over the screw-in length has a path in which it is close to a constant value.