Light Drill Screws CSK - 5.5 mm x 85 mm Netting & Cable Ties One hour fire and acoustic

One hour fire and acoustic insulated DPC for party wall and abutments - for cavity widths 91-100 mm

Ideal for fixing expanded polyester and insulation boards

Use with all joist hangers

Compatible with Visqueen gas system

Clear opening size - 290 mm x 290 mm

Light Drill Screws CSK - 5.5 mm x 85 mm Netting & Cable Ties One hour fire and acousticHex 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 85 mm CSK Head Ph3 Phillips screw driver bit.