3. Visit boulonnageBolting

Screwing is an assembly process that enables two or more parts to be joined together in a dismountable manner, using fasteners. These elements consist of a screw and a nut, and possibly one or two washers. The nut can be formed by one of the two parts of the assembly, which is then threaded. An assembly consisting of a screw and a nut is called a bolt.

These elements act by pressure on the parts, this pressure being the result of the elastic deformation exerted on the element during clamping.

Screws are manufactured from cylindrical steel wires. Depending on their dimensions and the type of steel, screws are shaped by forging (plastic deformation) or screw machining (material removal).

Threads are produced by deformation (rolling) or machining (metal removal). A rolled thread is more resistant than a cut thread,...