| 5K6393 | U1725 | MINISTRY OF DEFENCE AIR DOMESTIC R FERENCE NUMBER USE ONLY |
| 88300-300-115 | U1278 | MINISTRY OF DEFENCE NAVY |
| DEFSTAN53-13 | K0851 | MINISTRY OF DEFENCE DIRECTORATE OF STANDARDIZATION STAN 1 |
| SK7863-74 | K1488 | BRITISH AEROSPACE PLC NAVAL AND ELECTRONIC SYSTEMS DIVISION |
| B32 | K7766 | BRITISH STANDARDS INSTITUTION |
| SK7863-74 | U6441 | ATLANTIC INERTIAL SYSTEMS LIMITED |
| SP95 | K7766 | BRITISH STANDARDS INSTITUTION |
| SP95-B32 | K7766 | BRITISH STANDARDS INSTITUTION |
| SP95B32 | K7766 | BRITISH STANDARDS INSTITUTION |