Specifies the characteristics of chamfered hexagon thin nuts, with threads from M1,6 up to and including M64, with product grade A for threads d -< M16 and product grade B for threads d > M16.
SANS 1700-14-4:2003 history
2003SANS 1700-14-4:2003 Fasteners Part 14: Hexagon nuts Section 4: Hexagon thin nuts (chamfered) - Product grades A and B