On the above-mentioned NYLSTOP nuts temperature 120°C -included in the range of diameters between 3 and 8 mm one can assemble a Nylon cap which assures the self-locking action, the sealing t the tread level (test pressure 5 Kg/cm2) as well as the protection of the top of the screw and everything around.

In order to allow the setting of the Nylon cap, the across flats of the following nuts is modified 7 mm instead of 5,5

For further details, have reference to the corresponding dimensional sheet.

Contact Howmet for the diameter/type in manufacturing.