Knightsbridge FC350BK M3.5 x 50mm Flat-Head Countersunk Electrical Socket Screws - Black Nickel/Gunmetal\r\n- 50mm Extra Long Flat Head Screws.- Finish: Black Nickel Plated.- Used with switch and socket boxes.- M3.5 x 50mm Flat-Head countersunk electrical socket screw.- Ideal for use with screwless & flatplate switches & sockets.\r\nThe Knightsbridge FC350BK M3.5 x 50mm Flat-Head Countersunk Electrical Socket Screws is 50mm Extra Long Flat Head Screws. This Socket Screws is manufectured from steel material and finished with black nickel. Electrical socket screws for use on existing sockets and switches after tiling, plastering, dry lining, cladding etc, for when the existing screws will no longer reach. It is ideal for use with screwless & flatplate switches & sockets.\r\nFeatures:\r\n- Suitable for electrical installations.- Thread Size: M3.5.- Diameter: 3.5 mm.- Head Style: Countersunk.- Length: 50mm.- Material: Steel.- Drive System: Slotted- Thread Coverage: Fully Threaded