Perfect for light-duty sheet to steel fixings, these TechFast roofing screws are self-drilling with a hex/flange head and 16mm rubber washers. The washers expand under pressure to form a permanent weather seal.• Roofing screws for fixing sheets to steel• Self-drilling screws with hex/flange head and EPDM washers• No.3 drill tip for self-drilling in light gauge steel up to 5mm• 16mm rubber washer creates a permanent weather seal• Elementech corrosion-resistant coating for durability• Salt spray-tested to 1,000 hours

Brand Name	TechFast
Material	EPDM washers
Manufacturer Model No	TSTFHW16SD5570L
Type	Roofing screws
Length (mm)	70mm
Finish	Silver Treated
Diameter (mm)	5.5mm
Pack contents	100 x TechFast Hex/Washer Self Drilling Roof Screw 5.5 x 70mm
Screw bit fitting	Hex
Screwhead	Hexagonal-flange