This is a knurled screw with a fully threaded plastic collar. It is an exclusive Bülte reference. Its base is widely split and the grooves applied around the perimeter of the base provide the necessary grip. We offer it in natural nylon as standard.
They can be tightened and loosened without tools making them easy to use.
All plastic, they are lighter and more practical than their zinc-plated steel counterparts.
They are suitable for manual clamping and fixing.