ISO 7720:2012 Preview
Prevailing torque type all-metal hexagon nuts, style 2 -- Property class 9
This standard was last reviewed and confirmed in 2017. Therefore this version remains current.
ISO 7720:2012 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.
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