| 17-27B | 99237 | AIRFORCE-NAVY AERONAUTICAL DESIGN STANDARD |
| 210039 | K1631 | WESTINGHOUSE BRAKE & SIGNAL CO LTD |
| 238844 | K1631 | WESTINGHOUSE BRAKE & SIGNAL CO LTD |
| BS1806-241 | K7766 | BRITISH STANDARDS INSTITUTION |
| 210039 | U3761 | SCHNEIDER ELECTRIC |
| 238844 | U3761 | SCHNEIDER ELECTRIC |
| BSM48-241 | K7766 | BRITISH STANDARDS INSTITUTION |