| BS1981 | K7766 | BRITISH STANDARDS INSTITUTION |
| BS1981-TABLE 14 4 UNC X 3/16 | K7766 | BRITISH STANDARDS INSTITUTION |
| NDN41171TEM49 | K0185 | SMITHS AEROSPACE CUSTOMER SERVICES DIVISION |
| L072-403 | K0233 | THALES OPTRONICS LIMITED |
| DEFSTAN53-43 | K0851 | MINISTRY OF DEFENCE DIRECTORATE OF STANDARDIZATION STAN 1 |
| FV1015350 ITEM 21 | U0795 | QINETIQ |
| PF47411-306 | K0991 | MARCONI COMMUNICATION SYSTEMS LTD |
| Z5335-698F | U0041 | PRESTOLITE ELECTRIC LIMITED TEMS |