| 0251-16 | K7766 | BRITISH STANDARDS INSTITUTION |
| BS4518-0251-16 | K7766 | BRITISH STANDARDS INSTITUTION |
| DEFSTAN02-337-0251-16-FC70 | K0851 | MINISTRY OF DEFENCE DIRECTORATE OF STANDARDIZATION STAN 1 |
| NES 337 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| NES 337-0251-16-FC70 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| NES337-0251-16-FC70-(V72G) | U6183 | PRECISION POLYMER ENGINEERING LIMITE |
| UW232B1B | K1806 | MINISTRY OF DEFENCE, DE&S UNDERWATER AND ELECTRONIC WARFARE PT (UEW IPT) |