Exclusive to Bülte, this entirely plastic knurled head screw. has a diameter of 19 mm and has a base of 5 mm. Knurled head screw provides extra grip for advanced tightening. In addition, it is perfect for fixing objects and allows tool-free tightening.
The PLAS 89 knurled head screw can be screwed in by hand, which facilitates the tightening/unscrewing of a part that is impossible to access with a tool.
The knurled head screw allows by its solidity and its resistance, allows to fix elements or to maintain them in place.
These screws are most often used in industry, mechanics, and aeronautics...