Specifies the characteristics of prevailing torque type hexagon nuts (with non-metallic insert), style 1, with threads from M3 up to and including M36, in product grade A for threads up to and including M16 and product grade B for threads above M16, and
SANS 1700-15-1:1998 history
1998SANS 1700-15-1:1998 Fasteners Part 15: Prevailing torque type nuts Section 1: Prevailing torque type hexagon nuts (with non-metallic insert), style 1 - Property classes 5, 8 and 10