| 018 | K7766 | BRITISH STANDARDS INSTITUTION |
| ASCC17-27C-018 | 99237 | AIRFORCE-NAVY AERONAUTICAL DESIGN STANDARD |
| CH101-07-018 | K0377 | GOODRICH ACTUATION SYSTEMS LIMITED |
| BS1806 | K7766 | BRITISH STANDARDS INSTITUTION |
| BS1806-018 | K7766 | BRITISH STANDARDS INSTITUTION |
| BSM48-018 | K7766 | BRITISH STANDARDS INSTITUTION |
| FRS40101A018 | K2523 | EATON LIMITED |
| FRS40101A018 | U1918 | MISSION SYSTEMS WIMBORNE LIMITED |