This screw is a fully plastic screw with a 15.5mm diameter knurled head, threaded the entire length.
No tools are required for its use, so tightening can be done manually thanks to its knurled head. Lightweight, robust and very easy to use are its strengths.
Most screws have an 80mm thread. For lengths 15 and 17 mm, unthreaded part of 5mm under the head.
Ideal for all your assemblies, they can also be used as adjustment feet / jack.