Panel fastening systems

The regular utilisation of sandwich panels calls for identifying the most suitable fastening system. To assure safety, stability and sealing, the system must be selected based on the type of supporting structure. The designer must also evaluate usage conditions depending on local climatic conditions. Particular care should be given when fastening panels with aluminium or copper supports, and for dark colours.

  • Standard Self-Threading Screw
  • UDC self-drilling screw with double threading
  • UND Self-drilling stainless steel screw
  • Cappellotti standard

Features

Standard Self-Threading Screw

Used in structural fastening of roofing or wall on iron supporting structures (Standard iron pitch) or wood (Standard wood pitch). Self-Threading hexagonal head screw in corrosion-proof, tropicalised steel, diameter 6.3mm, variable length. It can be combined with ring caps. Initial boring is necessary.

UDC self-drilling screw with double threading

Used in structural fastening of roofing or wall on iron supporting structures. C18 steel, double thread, self-drilling screw with grade A Dacromet surface coating. Diameter 5.5 mm, hexagonal head with water-tight washer. Aluminium washer with EPDM vulcanized ring. Suitable for fastening insulated panels and metal corrugated profile sheets onto metal supports, it does not require pre-boring, requiring shorter installation times and less manpower.

UND Self-drilling stainless steel screw

Used in structural fastening of roofing or wall on metal supporting structures. C18 steel, self-drilling screw with grade A Dacromet surface coating. Diameter between 4.8 and 6.3 mm, hexagonal head and variable length. Suitable for fastening insulated panels and metal corrugated profile sheets onto metal supports, it does not require pre-boring, requiring shorter installation times and less manpower.

Standard caps

Used in structural fastening of roofing or wall on iron or wood supporting structures. Zinc-coated steel, pre-painted cap with ring. It is standard supplied with RAL 9002 paint. Used with standard self-threading screws. Different RAL customised paints are available on demand.