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| BS1806-255 | K7766 | BRITISH STANDARDS INSTITUTION |
| R4562ML5391 | K0640 | FREUDENBERG TECHNICAL PRODUCTS |
| R60-8989-57 | K0991 | MARCONI COMMUNICATION SYSTEMS LTD |
| BSM48-255 | K7766 | BRITISH STANDARDS INSTITUTION |
| R60-8989-57 | U2248 | SELEX ELSAG LTD |