| BS1768 | K7766 | BRITISH STANDARDS INSTITUTION |
| BS1768'A'-1/2-20UNFX2-1/4LG-MS | U9115 | MINISTRY OF DEFENCE BRITISH STANDARD REFERENCES CONSTRUCTED TO A DEFINITI LEVEL FOR EUROFIGHTER AND TORNADO U NCB TASKING |
| UFB108-18T | K4293 | CLARK INTERNATIONAL MARKETING |
| BS1768-A-1/2-20UNFX2-1/4LG-MS | U9115 | MINISTRY OF DEFENCE BRITISH STANDARD REFERENCES CONSTRUCTED TO A DEFINITI LEVEL FOR EUROFIGHTER AND TORNADO U NCB TASKING |