411 / | HD | EXPANDED, THREADED, DRIVEN, HEADED, TOOL-DEFORMED, OR LOCKED-THREADED FASTENER |
190 | DF | HAVING STRUCTURE TO RESTRICT ROTATION OF THREADED, MATING PIECES (E.G., NUT LOCK) {13} |
315 | DF | .~ With a member in the nature of a rotation preventing key movable laterally into engagement with the threaded elements {2} |
319 | .~.~ And including a plastically deformable portion {1} | |
320 | DF | .~.~.~> Comprising an elongated element divided longitudinally (e.g., a cotter pin) |