The first fixing retained the same form over centuries: as a conically formed piece of wood, which was secured in masonry that had been prized open.    

The prototype of fixing technology was further developed, after it was discovered how to drive round holes into solid brickwork. The holes were then mostly filled with fibre materials such as flax and hemp.  When a screw was turned in, the fibres were pressed against the drill hole wall and the forces imposed were transferred by friction – and so, the first expansion plug was virtually born. The fibre plugs, which were later produced by machines, had a steel centre. During the war, first trials using plastic to manufacture fixings were carried out due to a lack of raw materials (natural fibres and metals were being employed for armaments). At the end of the fifties, the plastic expansion plug that is common today replaced the fibre plug.

Today, fixing manufacturing concentrates on using polyethylene and polyamide in the plastics field, or on polyester und vinylester for adhesive anchors and mortar.  Metal fixings are predominantly manufactured from galvanised steel. However, to improve corrosion protection, various types of stainless steels are frequently being used, or their use is even compulsory.