Bolt head: countersunk

Surface treatment: zinc plated

Our levelling screws are suitable for fixing gypsum board walls to the wooden supporting beam, for levelling the framework. Due to the bit design, the screw goes into the wood easily, without pre-drilling, while the big thread diameter prevents the disconnection of the screw. The ribs under the head facilitate the perfect recess of the screw head. Its use makes the support of the structural strip unnecessary. It is also known as adjusting screw