| 5/8IN. UNC X 2-1/4IN. CLASS 1 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| 99-941-0016 | K0851 | MINISTRY OF DEFENCE DIRECTORATE OF STANDARDIZATION STAN 1 |
| DEFSTAN02-862 PART 2 | K0851 | MINISTRY OF DEFENCE DIRECTORATE OF STANDARDIZATION STAN 1 |
| DEFSTAN53-51 | K0851 | MINISTRY OF DEFENCE DIRECTORATE OF STANDARDIZATION STAN 1 |
| NES730 PART 8 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| BS1768 | K7766 | BRITISH STANDARDS INSTITUTION |
| NES862 PART 2 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |