| BS1981 | K7766 | BRITISH STANDARDS INSTITUTION |
| BS1981-TABLE 12 4 UNC X 15/16 | K7766 | BRITISH STANDARDS INSTITUTION |
| P221186-13 | K1423 | BRITISH AEROSPACE LAND & SEA SYSTEMS POST DESIGN SERVICES |
| P221257 | K1423 | BRITISH AEROSPACE LAND & SEA SYSTEMS POST DESIGN SERVICES |
| P221186-13 | K2158 | EUROPEAN INDUSTRIAL SERVICES LTD T/A NETTLEFOLDS |