The Rafix spreading bolt is simply inserted by hand into a 5 mm hole in a side panel to produce an immediate and firm locking connection when tightened.
The bolt consists of a double-tapered metal pin with the typical Rafix spherical head. This is embedded into a plastic spreading dowel. The top of the dowel is fitted with a knurled depth stop which makes manual insertion simple. The panel components are drawn together with a firm locking connection as the stop ensures a uniform tensioned length of 9 mm.
When the bolt is tightened with a Rafix cam, the double taper spreads the dowel, expanding it in the hole. The greater the effect of the tightening forces, the more durable the connection. To remove the spreading bolt, simply tap the metal pin back into the dowel and remove the bolt by hand.