5.5x50mm Hex S/Drill Screws Bi Metal (1.5-3.5mm) + Washer

Hex head self-drilling screws, for joining roofing sheets to light section steel (Max. 5.0mm) without the need to pre-drill a hole.

• Hardened carbon steel drill tip fused on to an A2-304 Austenitic Stainless Steel body