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AS 1110.1:2015
ISO metric hexagon bolts and screws - Product grades A and B - Bolts (FOREIGN STANDARD)
Adopts ISO 4014:2011, which specifies the characteristics of hexagon head bolts with threads from M1,6 up to and including M64, of product grade A for threads M1,6 to M24 and nominal lengths up to and including 10d or 150 mm, whichever is the shorter, and product grade B for threads over M24 or nominal lengths over 10d or 150 mm, whichever is the shorter
Standards Australia [sai]