| BS4439 | K7766 | BRITISH STANDARDS INSTITUTION |
| BS4439-M12X25-4H-1D | K7766 | BRITISH STANDARDS INSTITUTION |
| DEF STAN 02-862 PART 2 | K0851 | MINISTRY OF DEFENCE DIRECTORATE OF STANDARDIZATION STAN 1 |
| PL 004501728 REFERENCE 1312 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| PL 004501929 REFERENCE 1305 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| P.L. M.C.M./372/07/001 REFERENC- | K4944 | BAE SYSTEMS SURFACE SHIPS LIMITED |
| PLMCM/354/01/001 | K4944 | BAE SYSTEMS SURFACE SHIPS LIMITED |
| PLMCM/354/01/001 ITEM 1312 | K4944 | BAE SYSTEMS SURFACE SHIPS LIMITED |