| 411 / | HD | EXPANDED, THREADED, DRIVEN, HEADED, TOOL-DEFORMED, OR LOCKED-THREADED FASTENER |
| 15 | DF | HAVING SEPARATE EXPANDER MEANS {13} |
| 44 | DF | .~ Including sleeve and distinct tapered expander (e.g., anchor bolt type) {9} |
| 54 | DF | .~.~ Expansible element moved relative to stationary expander {1} |
| 54.1 | | .~.~.~ Spread by pressing element over initially inserted expander (e.g., push type) |