Socket shoulder screws are screws with an unthreaded cylindrical section, or shoulder, between threads and screwhead. They are fastened with a hex key wrench and are ideal when the primary concern is the application pulling apart. They have a hex socket head screw with an enlarged, unthreaded, cylindrical shoulder under the head, the diameter of which serves as the basis for the derivation of the nominal size.
Socket shoulder screws are screws with an unthreaded cylindrical section, or shoulder, between threads and screwhead. They are fastened with a hex key wrench and are ideal when the primary concern is the application pulling apart. They have a hex socket head screw with an enlarged, unthreaded, cylindrical shoulder under the head, the diameter of which serves as the basis for the derivation of the nominal size.