Light section steel (up to 5.0mm thick), Can be used for wood.
CORRUGATED TIMBER TEK TEC ROOFING SHEETING SCREWS / SELF DRILLING METAL TO WOOD
TIMBER TEK SCREWS - METAL TO TIMBER / ROOFING SHEET SCREWS
TIMBER Tek Screws - 6.3mm Hex Head Self-Drilling Roofing Screws w/ EPDM Washer
TEK SCREWS FOR WOOD ROOFING BOLTS FIX CORRUGATED SHEET TO TIMBER WITH FREE BIT
Corrugated Fasteners Timber & Boards Jointing Connectors-Steel- Various Sizes
Corrugated Fasteners Timber Connectors Wood Joints Hammer Steel 25mm Pack of 100