| BS450 | K7766 | BRITISH STANDARDS INSTITUTION |
| BS450-1958TAB2-2 5-16BSWX1 1-2M- | K0195 | BRITISH STANDARDS INSTITUTION |
| BS450-1958TAB2-2-5-16BSWX1-1-2MS | D8286 | DIN DEUTSCHES INSTITUT FUER NORMUNGEV |
| BS450-1958TAB2-258H | D8286 | DIN DEUTSCHES INSTITUT FUER NORMUNGEV |
| NEN1780A-BSW5/16X1,1/2-CUZN | H1266 | STICHTING NEDERLANDSNORMALISATIE-INSTITUUT |