| 021 | K7766 | BRITISH STANDARDS INSTITUTION |
| 0D28479P19 | K8098 | MAN DIESEL & TURBO LTD |
| 132070-10 | U2164 | JAMES WALKER & CO LTD |
| 50-021 | U2164 | JAMES WALKER & CO LTD |
| 50-021 | U8616 | JAMES WALKER & CO LTD |
| 132070-10 | U8616 | JAMES WALKER & CO LTD |
| DEFSTAN02-337-021-MN60 | K0851 | MINISTRY OF DEFENCE DIRECTORATE OF STANDARDIZATION STAN 1 |
| NES 337 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| BS1806 | K7766 | BRITISH STANDARDS INSTITUTION |
| BS1806-021 | K7766 | BRITISH STANDARDS INSTITUTION |
| BSM48-021 | K7766 | BRITISH STANDARDS INSTITUTION |
| C4638743 | U0834 | VOKES AIR FILTERS LTD |
| JW132070-10 | U2164 | JAMES WALKER & CO LTD |
| JW132070-10 | U8616 | JAMES WALKER & CO LTD |
| NES 337-021-MN60 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| NES 337-1984 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| NES337-021-MN60-(N63B) | U6183 | PRECISION POLYMER ENGINEERING LIMITE |