SANS 1700-7-2:1996 Fasteners Part 7: External drive hexagon bolts and screws Section 2: Hexagon head bolts - Product grade B - Reduced shank (shank diameter approximately equal to pitch diameter)
Gives specifications for hexagon head bolts with metric dimensions and thread diameters from 3 mm up to and including 20 mm, with reduced shank, of product grade B.
SANS 1700-7-2:1996 history
1996SANS 1700-7-2:1996 Fasteners Part 7: External drive hexagon bolts and screws Section 2: Hexagon head bolts - Product grade B - Reduced shank (shank diameter approximately equal to pitch diameter)