| 16B9049 | U1725 | MINISTRY OF DEFENCE AIR DOMESTIC R FERENCE NUMBER USE ONLY |
| 17-27B | 99237 | AIRFORCE-NAVY AERONAUTICAL DESIGN STANDARD |
| 183905 | K6437 | HALDEX BRAKE PRODUCTS LTD |
| 347 | K7766 | BRITISH STANDARDS INSTITUTION |
| BS1806-347 | K7766 | BRITISH STANDARDS INSTITUTION |
| BSM48-347 | K7766 | BRITISH STANDARDS INSTITUTION |
| R6425P5 | K0640 | FREUDENBERG TECHNICAL PRODUCTS |