| BS1981-TABLE 4 1/2 UNC X 1 | K7766 | BRITISH STANDARDS INSTITUTION |
| M173-91-1SH1PT1 | K6451 | BAE SYSTEMS MARINE LIMITED |
| M173-91-2-6 | K6451 | BAE SYSTEMS MARINE LIMITED |
| M173-91-2PT6 | K6451 | BAE SYSTEMS MARINE LIMITED |
| SSN07M173-91-1SH1-1 | K6451 | BAE SYSTEMS MARINE LIMITED |
| SSN07M173-91-1SH1PT1 | K6451 | BAE SYSTEMS MARINE LIMITED |
| SSN07M173-91-2-6 | K6451 | BAE SYSTEMS MARINE LIMITED |
| SSN07M173-91-2PT6 | K6451 | BAE SYSTEMS MARINE LIMITED |