Language
EN 14399 (-10 cup) - 2018
EN 14399 (-10 Countersunk) - 2018
EN 14399 (-10 hexagon) - 2018
GB /T 32076.8 - 2017
GB /T 3632 (S) - 2008
GB /T 32076.9 - 2017
JSS II 09 (-1) - 1996
GB /T 3632 (S) - 1995