SOL - N17 A A fixed fastener suitable for installing structures on roofs covered with trapezoidal sheet metal roof coverings Eternit, Tegola, fibre cement roof coverings and similar. Fastener is screwed onto a steel structural element. The seal ensures water tightness at the point of fastening. Fastener has a transversally mounted fastening plate for fastening mounting profile. In a set together with fastening screws.