This is a fully plastic 19.5 mm diameter knurled screw. This threaded screw is perfect for securing objects. Thanks to its strength and resistance, the knurled screw allows elements to be fixed or held in place.
The PLAS 100 knurled head screw can be screwed in by hand, but also with a wrench.
The knurled screw provides better grip for advanced tightening.
They are often used in industry, mechanics, aeronautics ...