If you're joining timber to light section steel, these TechFast roofing screws will give you a strong and secure fix. Self-drilling screw with countersunk head and wing tip. Used for fixing timber to light section steel. No.3 drill tip for self-drilling light gauge steel up to 5mm. Torx-compatible insert for a higher transmission of power. Breakaway wings protect thread when drilling through. Recessed ribs improves countersinking for a flush finish. Salt spray-tested to 1,000 hours. Torx bit included in each pack

Brand Name	TechFast
Colour	Silver
Manufacturer Model No	TSTFCUWWSD4838L
Type	Self Drill Roofing
Length (mm)	38mm
Interior / Exterior Use	Exterior Use
Finish	Silver Treated
Diameter (mm)	4.8mm
Pack contents	200 x TechFast Light Duty Self Drilling Torx Roof Screw 4.8 x 38mm
Pack Size	200
Screw bit fitting	Torx
Screwhead	Countersunk