BS EN ISO 4017:2014

This International Standard specifies the characteristics of hexagon head screws with threads from M1,6 up to and including M64, of product gradeA for threads M1,6 to M24 and nominal lengths up to and including 10d or 150mm, whichever is the shorter, and product gradeB for threads over M24 or nominal lengths over 10d or 150mm, whichever is the shorter.

NOTE This type of product is the same as that covered by ISO4014 with the exception of threading up to head and nominal lengths up to and including 200mm as preferred lengths.

If, in special cases, specifications other than those listed in this International Standard are required, they can be selected from existing International Standards, for example ISO724, ISO888, ISO898-1, ISO965-1, ISO3506-1, ISO4753 and ISO4759-1.