Window Fabrication Screws - Reinforced Frames - Countersunk - Self-Drilling - 3.9 x 19mm - Box of 1000
Multiple uses for fitting a variety of hardware to frames where there is a steel or aluminium reinforcement present. Countersunk head with ribs under head for improved countersinking.
For attaching friction stays with countersunk holes to steel reinforced PVCu frames. Also known as a repair screw, frequently used in stripped holes.
Finish: Zinc
Head Type: Countersunk with Ribs
Driver Bit Size: PH2
Material: Carbon Steel
Point Type: Self-Drilling
Recess Type: Phillips
Thread Coverage: Fully Threaded
Thread Type: Self-Tapping
