| BS1981-TABLE 12 6 UNC X 3/8 | K7766 | BRITISH STANDARDS INSTITUTION |
| BS1981PANHD6-32UNC3-81NCD | U9115 | MINISTRY OF DEFENCE BRITISH STANDARD REFERENCES CONSTRUCTED TO A DEFINITI LEVEL FOR EUROFIGHTER AND TORNADO U NCB TASKING |
| PF47641-312 | K0991 | MARCONI COMMUNICATION SYSTEMS LTD |
| PF47641-312 | U2248 | SELEX ELSAG LTD |