| 28N17914 | U1725 | MINISTRY OF DEFENCE AIR DOMESTIC R FERENCE NUMBER USE ONLY |
| AS8451-17 | 0U583 | SAE INTERNATIONAL |
| AS8451/17 | 0U583 | SAE INTERNATIONAL |
| AS8451-17 | K1209 | CROSS MANUFACTURING COMPANY (1938) LIMITED |
| AS8451-17 | K7766 | BRITISH STANDARDS INSTITUTION |
| AS8451-17 | U1653 | SOCIETY OF BRITISH AEROSPACE COMPANI LTD SBAC |
| DEFSTAN53-14 | K0851 | MINISTRY OF DEFENCE DIRECTORATE OF STANDARDIZATION STAN 1 |
| AS8451/17 | U14C6 | SAE ITC ENGINE & AIRFRAME TECHNICALSTANDARDS |
| AS8451/17 | U1653 | SOCIETY OF BRITISH AEROSPACE COMPANI LTD SBAC |