| 7671-1113 | U6441 | ATLANTIC INERTIAL SYSTEMS LIMITED |
| BS1981-TABLE 4 2 UNC X 5/32 | K7766 | BRITISH STANDARDS INSTITUTION |
| SK7671-1113 | K1488 | BRITISH AEROSPACE PLC NAVAL AND ELECTRONIC SYSTEMS DIVISION |
| BS3155 | K7766 | BRITISH STANDARDS INSTITUTION |
| SK7671-1113 | U6441 | ATLANTIC INERTIAL SYSTEMS LIMITED |