| Clue | Source | Date |
|---|---|---|
| Six-sided fastener | LA Times Daily | 16 Aug 2020 |
| Six-sided fastener | The Washington Post | 16 Aug 2020 |
| Six-sided hardware item | Wall Street Journal | 11 Mar 2019 |
| Six-sided hardware item | ||
| Threaded fastener | The Washington Post | 16 Aug 2018 |
| Threaded fastener | LA Times Daily | 16 Aug 2018 |
| Six-sided metal fastener | The Washington Post Sunday | 25 Feb 2018 |
| Six-sided fastener | ||
| Threaded fastener | ||
| Tire rim fastener | Newsday | 28 Jul 2017 |
| Six-sided bit of hardware | USA Today | 08 Jan 2017 |
| Six-sided bit of hardware | ||
| Bit of hardware for which a wrench is required |