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| 30B2320 | U1725 | MINISTRY OF DEFENCE AIR DOMESTIC R FERENCE NUMBER USE ONLY |
| BS219 | K7766 | BRITISH STANDARDS INSTITUTION |
| BS219-5S | K7766 | BRITISH STANDARDS INSTITUTION |
| BS219GRADE5S | K7766 | BRITISH STANDARDS INSTITUTION |
| BS219TYPE5SLEADALL0Y | U9115 | MINISTRY OF DEFENCE BRITISH STANDARD REFERENCES CONSTRUCTED TO A DEFINITI LEVEL FOR EUROFIGHTER AND TORNADO U NCB TASKING |
| EN29453-GRADE 5S | I9006 | COMITE EUROPEEN DE NORMALISATION |
| BSEN29453 | K7766 | BRITISH STANDARDS INSTITUTION |