Light Drill Screws CSK - 5.5 mm x 100 mm Stop-Socks BBA certified for cold and

BBA certified for cold and warm roof applications and as a timber frame wrap

5 mm x 100 mmCSK HeadPh3 Phillips screw driver bit

in both vertical and horizontal situations

Stainless steel crack control reinforcement designed for bonding and strengthening brickwork

Light Drill Screws CSK - 5.5 mm x 100 mm Stop-Socks BBA certified for cold andHex head self drilling (tek) screws. Hexagon washer head screws, widely used in the roofing industry for self drilling through metal. ALso used for fixing brackets and ties to steel columns. These screws are designed to work without a pilot drill, however a pilot drill can be used for very hard materials. Light Section screws can drill into a max thickness of 5mm steel. 5. 5 mm x 100 mmCSK HeadPh3 Phillips screw driver bit.