SANS 1700-15-5:1998 Fasteners Part 15: Prevailing torque type nuts Section 5: Prevailing torque type all-metal hexagon nuts with flange - Product grades A and B
Specifies the characteristics of prevailing torque type all-metal hexagon nuts with flange and threads from M5 to M20 inclusive, in product grade A for threads up to and including M16 and product grade B for threads above M16, and with property classes 8
SANS 1700-15-5:1998 history
1998SANS 1700-15-5:1998 Fasteners Part 15: Prevailing torque type nuts Section 5: Prevailing torque type all-metal hexagon nuts with flange - Product grades A and B