| 16B7050 | U1725 | MINISTRY OF DEFENCE AIR DOMESTIC R FERENCE NUMBER USE ONLY |
| 17-27B | 99237 | AIRFORCE-NAVY AERONAUTICAL DESIGN STANDARD |
| 437 | K7766 | BRITISH STANDARDS INSTITUTION |
| BS1806-437 | K7766 | BRITISH STANDARDS INSTITUTION |
| BSM48-437 | K7766 | BRITISH STANDARDS INSTITUTION |
| LV6MT1G0R222 | U1269 | MINISTRY OF DEFENCE - DEFENCE LOGIST S ORGANISATION DLO |
| R222 | K0640 | FREUDENBERG TECHNICAL PRODUCTS |
| R8600ML5391 | K0640 | FREUDENBERG TECHNICAL PRODUCTS |