BS ISO 7720:2012

1   Scope This International Standard specifies the characteristics of prevailing torque type all-metal hexagon nuts, of style 2, with threads from M5 up to and including M36, in product grade A for threads up to and including M16, and product grade B for threads over M16, and with property class 9.

   NOTE 1  The dimensions of the nuts, with the exception of the dimensions   m   w  and   h   max , correspond to those given in [ISO 4033](/search?q=ISO%C2%A04033). 


 
   NOTE 2  Nuts of property classes 5, 8, 10 and 12 are dealt with in [ISO 7042](/search?q=ISO%C2%A07042). 

If other specifications are required, they can be selected from existing International Standards, for example ISO 261, ISO 724, ISO 898-2, ISO 965-2, ISO 2320 and ISO 4759-1.