These nuts are closed knurled nuts with a serrated head. They allow manual tightening. They are available in black nylon filled with glass fiber. These are very interesting nuts allowing a perfect finish on your constructions.
These are closed knurled nuts, corrosion resistant, with a perfect finish.
The good mechanical, electrical and thermal properties of Polyamide are reinforced by fiberglass.
These nuts are often used in the construction, industrial and aeronautical industries...