Use and selection
This roofing type has a hex head and two threaded sections: the upper thread is described for the metal sheet and the lower thread for the base material. Record the sheet position, support type and distance between the engagement zones. Timber and light steel are named support contexts, but the required thread positions must be matched to the particular assembly.
Compare the configuration
Double Thread Sandwich Panel Screw is the separate sandwich-panel drill-point reference. For a sandwich-panel enquiry, compare the thread spacing and complete panel build-up as well as the overall screw length. Painted Hex Head Roofing Screw instead highlights the painted-head appearance requirement.
For your enquiry
- What are the roof-sheet profile, support material and relevant thicknesses?
- Where must the upper and lower threads engage in the assembled joint?
- What length, point, finish and washer arrangement are specified?
