| 518-2118745 PIECE 21 | 80064 | NAVAL SHIP SYSTEMS COMMAND |
| 518-2118745PIECE21 | 80064 | NAVAL SHIP SYSTEMS COMMAND |
| SSBN640-518-2118745 | 80064 | NAVAL SHIP SYSTEMS COMMAND |
| SSBN640-518-2118745 PIECE 21 | 80064 | NAVAL SHIP SYSTEMS COMMAND |
| 76625-03X4 PIECE 21 | 96169 | ELECTRIC BOAT CORPORATION |
| 76625-03X4PIECE21 | 96169 | ELECTRIC BOAT CORPORATION |