| 83447306 | K3958 | VINTEN AVIONICS SYSTEMS LTD |
| BS1981 | K7766 | BRITISH STANDARDS INSTITUTION |
| BS1981-TABLE 10 4 UNC X 3/16 | K7766 | BRITISH STANDARDS INSTITUTION |
| BS1981UNC-40X4-7SS | K7766 | BRITISH STANDARDS INSTITUTION |
| BS1981UNC4-40X3-16SS | K7766 | BRITISH STANDARDS INSTITUTION |