| 020 | K7766 | BRITISH STANDARDS INSTITUTION |
| BS1806 | K7766 | BRITISH STANDARDS INSTITUTION |
| BS1806-020 | K7766 | BRITISH STANDARDS INSTITUTION |
| BSM48-020 | K7766 | BRITISH STANDARDS INSTITUTION |
| FRS40101A020 | U1918 | MISSION SYSTEMS WIMBORNE LIMITED |
| FRS40101A020 | U9084 | EATON AEROSPACE LTD |