Evolution A4BM50-3 A4 Bi Met 5.5 x 50mm Light section A4 Stainless steel (100)

DescriptionEvolution A4BM50-3 A4 Bi Met 5.5 x 50 Light section with A4Designed For:Fastening in aluminium sheeting and panels.Hex head self-drilling screws, for joining roofing sheets to light section steel (Max. 5.0mm) without the need to pre-drill a hole.A version of the standard hex headed self drilling screw or tek screw, tek 3, with the addition of an EDPM bonded washer for applications that require a waterproof seal. For fixing to light steel section of between 1.2mm and 3.5mm thickness.Description: A4 Grade Bi-Metal Tek ScrewSize: 5.5 x 50mmBox Quantity: 100stainless steel body and head (A4) joined to a carbon steel self-drilling tip (and some lead threads).