| BS1806-026 | K7766 | BRITISH STANDARDS INSTITUTION |
| BSM48-026 | K7766 | BRITISH STANDARDS INSTITUTION |
| DEFSTAN02-337-026-MN70 | K0851 | MINISTRY OF DEFENCE DIRECTORATE OF STANDARDIZATION STAN 1 |
| NES 337 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| NES 337-026-MN70 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| NES 337-1984 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| SM54604-023 | K0216 | THALES OPTRONICS LIMITED |
| SW233A3 | K0584 | MINISTRY OF DEFENCE NAVY |
| NES337-026-MN70-(N73B) | U6183 | PRECISION POLYMER ENGINEERING LIMITE |