Damping Nut :
Material : High strength steel and high polymer
Size : M18 M20 M22

 Damping Nut :

     Damping nut is made of high strength steel and high polymer, inside of nut ,high polymer being a stopper make sure the whole nut bear a limited torque and spined with rock bolt when mixing grout cartridge ; After grout is mixed well and solid,with the increasing of torque and rock bolt screws into nut ,the polymer stopper can not bear strength , being drived out from the nut .

      Damping nut make the installation simpler ,mixing grout cartridge and installing the nut and plate can being finished step by step fluently .

      The function of damping nut is the same as shear pin .a