| BS4168 PART 1 | K7766 | BRITISH STANDARDS INSTITUTION |
| BSENISO4762 | K7766 | BRITISH STANDARDS INSTITUTION |
| ISO4762-M16X35-A4-70 | I9008 | INTERNATIONAL ORGANIZATION FOR STANDARDIZATION (ISO) |
| PL 004501728 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| P.L. M.C.M./354/01/001 | K4944 | BAE SYSTEMS SURFACE SHIPS LIMITED |
| P.L. M.C.M./354/01/001 REFERENC- | K4944 | BAE SYSTEMS SURFACE SHIPS LIMITED |
| PL 004501728 REFERENCE 1307 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |