Prevailing torque type all-metal Hex flange nut
This International Standard specifies the characteristics of
prevailing torque type all-metal hexagon flange nuts 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,
9, 10 and 12.
clamping forces and prevailing torques for hex flange nuts with