NF EN ISO 8676 Standard Dimensions for
Hexagon head screws, metric fine thread, fully threaded
This standard (NF EN ISO 8676) specifies the characteristics of hexagon head screws with metric fine pitch thread with nominal thread diameters, d, from 8 mm to 64 mm, of product grade A for nominal thread diameters, d, from 8 mm to 24 mm and nominal lengths, l, up to and including 10d or 150 mm, whichever is the shorter, and of product grade B for nominal thread diameters, d, over 24 mm or nominal lengths, l, over 10d or 150 mm, whichever is the shorter.
Dimensional Drawing and Technical Diagrams