Description The Bremick B8 Coating Hex Flange Head Screw has a larger head than typical screws. The flange head gives a greater surface area for even distribution of pressure on the work surface. this increases holding power. This screw also has a polycarbonate assembly seal which expands and contracts due to changes in temperature. This screw has a B8 coating - a proprietary electroplated zinc and nickel blend - which has twice the corrosion resistance compared to standard galvanised steel. This screw is rated class five meaning that it can be used in severe corrosion and chemical areas. Main Feature Flange head increases holding power, polycarbonate seal expands and contracts with changes in temperature increasing the durability of the screw. Flange head improves holding power B8 coating gives significant corrosion resistance EPDM Seal improves fasteners lifespan Specifications Attribute Value SKU SUHT8620509 Product ID 4525830 Brand Bremick Product Type Self Drilling Screw Diameter 6.2 mm Length 50 mm Drive Type Hex Head Type Flanged Hex Material Steel Finish B8 Coated Comes With Deks EPDM Seal Pack Size 50/Pack